- dovecot - dovecot.org

Doveadm backup error.
by Dovecot list 10 Dec '17

10 Dec '17

Hello. I try to migrate dovecot 1 to dovecot 2 with doveadm backup. But when i try to set doveadm backup i get : mx3:/root/dsync@[23:11] # doveadm -v -c ah.temp backup -R -u ah(a)test.pl <ahuryn(a)i-pi.pl> imapc: doveadm(ah(a)test.pl <ahuryn(a)i-pi.pl>): Error: Mail access for users with UID 145 not permitted (see first_valid_uid in config file, uid from userdb lookup). doveadm(ah(a)test.pl <ahuryn(a)i-pi.pl>): Error: User init failed mx3:/root/dsync@[22:13] # ls -la /home/mail/vhosts/test.pl/ah(a)test.pl/ <http://i-pi.pl/ahuryn@i-pi.pl/> total 1 drwxr-xr-x 2 vmail vmail 2 Nov 12 23:59 . mx3:/root/dsync@[22:14] # doveadm user ah(a)test.pl <ahuryn(a)i-pi.pl> field value uid 145 gid 145 home /home/mail/vhosts/test.pl/ah(a)test.pl <http://i-pi.pl/ahuryn@i-pi.pl> mail mdbox:~/mdbox quota_rule *:storage=50000M mx3:/root/dsync@[22:14] # id 145 uid=145(vmail) gid=145(vmail) groups=145(vmail) mx3:/root/dsync@[1:14] # doveconf -n | grep 145 first_valid_uid = 145 last_valid_uid = 145 I dont have any idea whats is the problem. Best regards.

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Mail-crypt plugin clarification
by rje 10 Dec '17

10 Dec '17

I'm looking into ways to encrypt the stored email on my server. The idea is to make it impossible for my hosting provider (who has access to my VPS) to read the mail from the disk. So I'm looking into ways to do this, and I found the mail-crypt plugin for dovecot. Unfortunately I find the documentation very hard to understand. There is no clear description of what the goal and purpose of the plugin is, or how it works. Most of the documentation is very short and provides no explanation. So here are some questions - I will gladly help to update the documentation when some of these questions are answered :) If you cannot answer them all, please tell me what you know.. - It seems mail-cypt will transparently encrypt/decrypt mail - so it stores it on the server in encrypted form, but dovecot serves it unencrypted over IMAP. Is this correct? - It seems that mail-crypt needs both a private and a public key to work. Is this correct? - If mail-crypt has both private and public key in its configuration, does that not defeat the purpose of the whole thing? Anyone with access to the disk will be able to read everything? Regarding the settings: mail_crypt_global_private_key(_n) - Private key to decrypt files, you can specify many mail_crypt_global_public_key - Public key to use to encrypt files, you can specify one - How does this work? What does mail-crypt do when multiple private keys are specified? mail_crypt_private_key - Private key to decrypt user's master key, can be base64 encoded mail_crypt_private_password - Password to decrypt user's master key or environment private key - What is the relation between a users master key, and the private/public global keys above? What is an environment private key? TIA, and as I said above, I will help with updating the docs! -- Sent from: http://dovecot.2317879.n4.nabble.com/

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Re: Use multiple mbox locations
by Joseph Tam 09 Dec '17

09 Dec '17

Steffen Kaiser > Hmm, this is a job for: > > https://wiki2.dovecot.org/Plugins/Snarf Cool! Can this be used with the imapc: driver to consolidate mail from separate IMAP accounts into one? (Sort of like how you can configure Gmail to slurp up mail into the Gmail account.) Joseph Tam <jtam.home(a)gmail.com>

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Use multiple mbox locations
by bapt x 08 Dec '17

08 Dec '17

Hello, With GNU mailutils on Debian 9, we receive mails in /var/mail/<username> but when we read mails with the "mail" command, they are moved in a file ~/mbox: "Saved 1 message in /home/<username>/mbox". I use Roundcube webmail with Dovecot but if I also use use the "mail" command to read emails, Roundcube will not display old messages anymore since they were moved to ~/mbox. So is their a way to tell Dovecot that we want to lookup for emails both in /var/mail/<username> and ~/mbox? I saw https://wiki.dovecot.org/Namespaces#Mixed_mbox_and_Maildir but I it did not work if when I tried to add 2 times a mbox location. Thanks for your help.

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Errors and dovecot crashing...
by SH Development 06 Dec '17

06 Dec '17

Our production dovecot/postfix server has been stable for a number of years. In the last month or so, we are seeing increasing errors such as these: Dec 6 15:51:20 mail dovecot: imap(redacted(a)lilythicket.com): Warning: Transaction log file /home/vmail/lilythicket.com/diana/Maildir/dovecot.index.log was locked for 322 seconds Dec 6 15:50:54 mail dovecot: imap(redacted(a)theormans.com): Warning: Maildir /home/vmail/theormans.com/connieorman/Maildir/.Junk: Synchronization took 66 seconds (1 new msgs, 0 flag change attempts, 0 expunge attempts) Dec 6 15:51:43 mail dovecot: master: Error: service(pop3-login): Initial status notification not received in 30 seconds, killing the process Dec 6 15:51:43 mail dovecot: master: Error: service(pop3-login): command startup failed, throttling Dec 6 15:51:43 mail dovecot: master: Error: service(imap-login): child 5868 killed with signal 9 Dec 6 15:51:43 mail dovecot: master: Error: service(imap-login): command startup failed, throttling Dec 6 15:55:31 mail dovecot: imap-login: Fatal: Corrupted SSL ssl-parameters.dat in state_dir: Truncated file Dec 6 15:55:32 mail dovecot: pop3-login: Fatal: Error reading configuration: Timeout reading config from /var/run/dovecot/config And so forth. Seems to be all over the place. The server slows down to a crawl. Restarting dovecot or postfix has no effect on the problem. Only a server reboot solves it, temporarily. Sometimes for weeks, sometimes for hours. The hard drive SMART status reads okay. During this time, of course, users cannot connect to check their email. Thoughts on where to go to troubleshoot this and why it’s happening? Ethon

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Re: Howto authenticate smartPhone via Active Directory
by Mark Foley 06 Dec '17

06 Dec '17

On Tue, 5 Dec 2017 16:42:15 +0100 mj <lists(a)merit.unu.edu> wrote: > Hi, > > Not much time to reply now. > > On 12/05/2017 05:21 AM, Mark Foley wrote: > > mj - thanks! That the first useful example I've received from any forum/list. I'm getting ready > > to try my config (have to do so after hours), but I have some probably simple-minded questions: > > Well, that looks as if you are testing/trying out on your production > machine. Why not setup a seperate (virtual?) test server to play with..? > Use the same os version, with the same dovecot version. > Or clone your production machine, so you can test as much as you like, > without time pressure, at any given time. I've been playing with this ldap authentication for a couple of years off and on. Time isn't a problem. The issue with setting up a test environment is that I really need the domain workstations and external smartphone attempting to connect when I make a change so I can follow what's going on in the Dovecot log and maillog. It's rather simple to test a change, then put things back. I'll likely not go the test platform route for now, but thanks for the input. > > Your example is not the complete dovecot-ldap.conf.ext file, right? Have you just given me > > differences in your config from the "original"? You've kept the hosts, base, ldap_version, > > scope, deref, debug_level, and auth_bind_userdn settings in your config, right? > Not the complete file, no. I just provided the essentials. > [deleted] Ok, here's what I've come up with for dovecot-ldap.conf.ext hosts = mail.hprs.local base = dc=mail, dc=hprs, dc=local ldap_version = 3 scope = subtree deref = never debug_level = -1 auth_bind = yes auth_bind_userdn = %n@dom dn = cn=Administrator,cn=users,dc=hprs,dc=local dnpass = ******* user_filter = (&(objectclass=person)(sAMAccountName=%n)(!(userAccountControl=514))) pass_filter = (&(objectclass=person)(sAMAccountName=%n)(!(userAccountControl=514))) I've enabled auth-ldap.conf.ext in 10-auth.conf. My doveconf is listed at bottom. Unfortuntately, this doesn't work. My remote devices are not even showing as trying to connect. For internal domain LAN users I get: Dec 06 01:08:10 imap-login: Info: Disconnected: Auth process broken (disconnected before auth was ready, waited 30 secs): user=<>, rip=192.168.0.52, lip=192.168.0.2, session=<3/ZyxaVfE8PAqAA0> I do see ldap listening on 389, imap[s] (Dovecot) listening on 143 and 993, these last two are opened externally through the firewall. > For the rest: my advise is that you *really* need to pay around with > this much more. Get yourself a test environment, and play and test. > > Plus: read some dovecot/ad howto's, and try things in your own environment. > > Quick google returns: > https://www.howtoforge.com/postfix-dovecot-authentication-against-active-di… > I know my level of sophistication on this must sound like I've glibly posted a question hoping someone will do the work for me without my having to do any thinking myself, but believe me, I've been reading and experimenting with this for a very long time. I've got internal AD authentication working with GSSAPI and I've got a rather complex checkpassword program able to do authentication, so I don't think I'm a complete moron, although this project makes me feel that way. Now, I just want smartphones to authenticate with their owners' domain credentials and get them out of /etc/passwd. I believe I've read all the Dovecot wikis on ldap plus things from many other sites. I've been to that howtoforge site before. It mostly deals with setting up Postfix, which I'm not using. The dovecot bits make more sense in light of your feedback. I've tried that ldapsearch example: ldapsearch -x -h ad.example.com -D 'vmail' -W -b 'cn=users,dc=example,dc=com' with the domain user I specified in my dovecot-ldap.conf.ext with my host and dc info and I get the error ldap_bind: Strong(er) authentication required (8) additional info: BindSimple: Transport encryption required. I've seen confusing postings on this error having to do with port 636 and LDAPS -- no idea what they're talking about. My user is the Samba/domain administrator and has a pretty complex password. None of the sites I've visited on this error indicate it has anything to do with the actual password's complexity. Perhaps I'm just thick-skulled with all this. If you or anyone can see something obviously wrong with my conf, or have any suggestion at all on a baby step I can take to incm me forward, please let me know. Thanks, --Mark doveconf -n: # 2.2.33.2 (d6601f4ec): /usr/local/etc/dovecot/dovecot.conf # OS: Linux 4.4.88 x86_64 Slackware 14.2 auth_debug = yes auth_debug_passwords = yes auth_gssapi_hostname = $ALL auth_krb5_keytab = /etc/dovecot/dovecot.keytab auth_mechanisms = plain login gssapi auth_use_winbind = yes auth_username_format = %n auth_verbose = yes auth_verbose_passwords = plain disable_plaintext_auth = no info_log_path = /var/log/dovecot_info mail_location = maildir:~/Maildir passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } passdb { driver = shadow } protocols = imap ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2016-08-10/54e789087d419b6e.crt ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } userdb { driver = passwd } verbose_ssl = yes

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Re: Disabling index files?
by Stroller 06 Dec '17

06 Dec '17

> On 5 Dec 2017, at 15:32, Gregory Finch <gfinch(a)ldmltd.ca> wrote: >> >> How do I disable the index files, please? >> … >> > > from https://wiki2.dovecot.org/MailLocation#Index_files > > add :INDEX=MEMORY to your mail_location line, ie: > > mail_location = maildir:~/Maildir:INDEX=MEMORY Many thanks! That works perfectly. Stroller.

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Do we really need Solr commit as cronjob?
by Gao 06 Dec '17

06 Dec '17

I am testing Solr FTS on dovecot. Read online that some suggested to run cronjob commit every minute, and optimize once a day. I am using Solr 7.1.0 and I see some configurations: In /etc/default/solr.in.sh: #SOLR_OPTS="$SOLR_OPTS -Dsolr.autoSoftCommit.maxTime=3000" #SOLR_OPTS="$SOLR_OPTS -Dsolr.autoCommit.maxTime=60000" Also in solrconfig.xml: <autoCommit> <maxTime>${solr.autoCommit.maxTime:15000}</maxTime> <openSearcher>false</openSearcher> </autoCommit> <autoSoftCommit> <maxTime>${solr.autoSoftCommit.maxTime:-1}</maxTime> </autoSoftCommit> So my question is do I still need run cronjob for commit? Do I need uncomment these lines in the solr.in.sh? Does my solrconfig.xml overwrite the setting in solr.in.sh? Thanks for help.

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Re: Howto authenticate smartPhone via Active Directory
by Aki Tuomi 05 Dec '17

05 Dec '17

with passdb ldap i guess. ---Aki TuomiDovecot oy -------- Original message --------From: Mark Foley <mfoley(a)ohprs.org> Date: 03/12/2017 21:18 (GMT+02:00) To: dovecot(a)dovecot.org Subject: Re: Howto authenticate smartPhone via Active Directory Yes, you are right. This link: https://www.redips.net/linux/android-email-postfix-auth/#section2 shows: passdb pam { } used for authenticating Android. Problem #1 is that Slackware does not ship with PAM and the AD/DC Samba4 does not use it. It is used on Slackware for a domain member, but I'm not sure I should try configuring PAM on the AD/DC. Is there some otherway I can get authentication using domain credentials besides pam? the phone can send user and password. --Mark -----Original Message----- > Date: Sun, 03 Dec 2017 15:22:56 +0200 > Subject: Re: Howto authenticate smartPhone via Active Directory > From: Aki Tuomi <aki.tuomi(a)dovecot.fi> > To: Mark Foley <mfoley(a)ohprs.org>, dovecot(a)dovecot.org > > Actually you are authenticating gssapi clients from ad and everyone else from shadow. maybe you need to configure pam module? > ---Aki TuomiDovecot oy > > -------- Original message -------- > From: Mark Foley <mfoley(a)ohprs.org> > Date: 03/12/2017 06:03 (GMT+02:00) > To: dovecot(a)dovecot.org > Subject: Howto authenticate smartPhone via Active Directory > I have a Samba4 Active Directory server. Dovecot authenticates AD Users with domain credentials > using GSSAPI (Thunderbird client). I believe I have Dovecot set to attempt authentication via > shadow first and. failing that, it does authenticate via GSSAPI. > > Smartphones connect to Dovecot via port 143 and SSL. They are not domain members so if the > shadow authentication fails, no other methods are tried and no connection is made. > > What can I do with my dovecot config to fix this? > > > doveconf -n > # 2.2.15: /usr/local/etc/dovecot/dovecot.conf > # OS: Linux 4.4.88 x86_64 Slackware 14.2 > auth_debug = yes > auth_debug_passwords = yes > auth_gssapi_hostname = $ALL > auth_krb5_keytab = /etc/dovecot/dovecot.keytab > auth_mechanisms = plain login gssapi > auth_use_winbind = yes > auth_username_format = %n > auth_verbose = yes > auth_verbose_passwords = plain > disable_plaintext_auth = no > info_log_path = /var/log/dovecot_info > mail_location = maildir:~/Maildir > passdb { > driver = shadow > } > protocols = imap > ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2016-08-10/54e789087d419b6e.crt > ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/mail.ohprs.org.key > userdb { > driver = passwd > } > verbose_ssl = yes > > Thanks, Mark

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Disabling index files?
by Stroller 05 Dec '17

05 Dec '17

The wiki says: > Each mailbox has its own separate index files. **If the index files are disabled**, the same structures are still kept in the memory, except cache file is disabled completely (because the client probably won't fetch the same data twice within a connection). [1] I tend to grep my maildirs quite often, and use the output to cp emails to other folders, so it's annoying when the dovecot.index.cache files show up in the results. How do I disable the index files, please? My mail server is hardly loaded, so I don't think it'll be a problem to keep the caching in memory. I can find `mailbox_list_index = no` in /etc/dovecot/conf.d/10-mail.conf but this seems to be enabled by default, and it makes no difference when I enable it explicitly - deleted dovecot.index.cache are recreated when Dovecot is restarted. The setting `mbox_min_index_size` tends to suggests it's only for mbox files, not maildirs? Thanks in advance for any help you can offer, Stroller. [1] https://wiki.dovecot.org/IndexFiles

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Re: Recommended tool for migrating IMAP servers
by Joseph Tam 05 Dec '17

05 Dec '17

"Davide Marchi" <danjde(a)msw.it> writes: >> UW-IMAP's mailutil, imapsync, YippieMove and Larch. Whatever you use, *don't* use UW-IMAP's mailutil unless you got lots of time to kill. It is dreadfully slow -- I used it to export some of my users' mailboxes to Gmail or other remote mail servers, and I could almost cut&paste the messages faster. Like Aki said, if you have the same mailbox format and FS access on both sides, rsync is much simpler. You can also try exporting the old mailboxes via NFS, and with some artful symlinks, march through your user mailboxes replacing the symlinks with the instantiated local copies and have almost zero downtime. Joseph Tam <jtam.home(a)gmail.com>

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Can passdb be bypassed for non-plaintext authentication mechanisms
by Mark Foley 05 Dec '17

05 Dec '17

I am using Active directory authentication via gssapi for most users. In dovecot.conf I have: auth_mechanisms = plain login gssapi auth_use_winbind = yes I also have passdb { driver = shadow } userdb { driver = passwd } for those few users who are NOT AD users. Even though the AD users do not exist in /etc/passwd or /etc/shadow, Dovecot ALWAYS first looks them up in shadow, which ALWAYS fails. The https://wiki2.dovecot.org/PasswordDatabase wiki says, "these databases can't be used with non-plaintext authentication mechanisms." Is there a way to bypass checking passdb (and userdb?) for these mechanism? --Mark

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Re: Recommended tool for migrating IMAP servers
by Davide Marchi 05 Dec '17

05 Dec '17

[..] > Hi, > > I vouch for imapsync. Have used it in the past with quite a big amount > of > emails. > > cheers. > > x0p Ah, thanks x0! > Also if you have fs access on both servers, and you are using maildir, > plain rsync works just as well. > > Aki no, I've not fs access on both servers! :-/ > If you want to preserve IMAP UID:s and possibly also POP3 UIDL:s then > dovecot internal > dsync is the only tool that can do it. > > With every other tool you will face end users needing to invalidate > their local caches and > redownloading all headers if not also all mail bodies. > > Sami > Can I use this tool even if I do not know the other remote server typology? Many thanks to all!! Davide -- firma cosmogoniA <https://www.cosmogonia.org/> n o p r o v a r e n o f a r e o n o n f a r e n o n c e p r o v a r e

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Re: Dovecot lmtp doesn't log
by Tomislav Perisic 04 Dec '17

04 Dec '17

Does anyone have any idea regarding this? On 17 Nov 2017 11:36, "Tomislav Perisic" <tomiperisic(a)gmail.com> wrote: Hi, We have 2 servers, server A and server B. Server A has: Postfix dovecot-2.2.33.2-1.el6.x86_64 Server B has: dovecot-2.2.33.2-1.el6.x86_64 dovecot-pigeonhole-2.2.33.2-1.el6.x86_64 Server A receives email on postfix, dovecot then takes that email from postfix and proxies it to Server B Dovecot. Dovecot on Server B takes the proxied email and delivers it with lmtp to the user inboxes. The problem is that the dovecot on server B Doesn't log anything regarding the emails that are being delivered to the mailbox via lmtp. Dovecot on server A logs everything perfectly regarding the proxy, so my assumption is that there is an issue with Dovecot lmtp logging. We changed the logging from syslog directly to a file and we noticed the same problem, missing log entries. We also tried turning on verbose logging and it didn't help. Server B: Red Hat 6.7 x86_64 rpm -qa | grep dove dovecot-2.2.33.2-1.el6.x86_64 dovecot-pigeonhole-2.2.33.2-1.el6.x86_64 doveconf -n # 2.2.33.2: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 auth_cache_negative_ttl = 0 auth_debug = yes auth_debug_passwords = yes auth_verbose = yes listen = * mail_debug = yes mail_gid = mail mail_location = maildir:~/Maildir mail_plugins = " quota zlib" mail_uid = vmail managesieve_notify_capability = mailto namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } mailbox Virus { auto = subscribe } plugin { quota = maildir:User quota sieve_extensions = +editheader sieve_max_actions = 32 sieve_max_redirects = 4 sieve_max_script_size = 1M sieve_quota_max_scripts = 0 sieve_trace_debug = yes sieve_trace_level = matching sieve_vacation_dont_check_recipient = yes sieve_vacation_send_from_recipient = yes sieve_vacation_use_original_recipient = yes zlib_save = gz zlib_save_level = 6 } protocols = imap pop3 lmtp sieve service auth { unix_listener auth-userdb { group = mail mode = 0666 user = vmail } } service lmtp { inet_listener lmtp { port = xx } } service managesieve-login { inet_listener sieve { port = xx } service_count = 1 } protocol lmtp { mail_plugins = " quota zlib sieve mail_log notify" } protocol imap { mail_plugins = " quota zlib imap_quota imap_zlib" } protocol sieve { managesieve_implementation_string = dovecot managesieve_logout_format = bytes ( in=%i : out=%o ) managesieve_max_line_length = 65536 managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave }

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Re: Howto authenticate smartPhone via Active Directory
by Mark Foley 03 Dec '17

03 Dec '17

Yes, you are right. This link: https://www.redips.net/linux/android-email-postfix-auth/#section2 shows: passdb pam { } used for authenticating Android. Problem #1 is that Slackware does not ship with PAM and the AD/DC Samba4 does not use it. It is used on Slackware for a domain member, but I'm not sure I should try configuring PAM on the AD/DC. Is there some otherway I can get authentication using domain credentials besides pam? the phone can send user and password. --Mark -----Original Message----- > Date: Sun, 03 Dec 2017 15:22:56 +0200 > Subject: Re: Howto authenticate smartPhone via Active Directory > From: Aki Tuomi <aki.tuomi(a)dovecot.fi> > To: Mark Foley <mfoley(a)ohprs.org>, dovecot(a)dovecot.org > > Actually you are authenticating gssapi clients from ad and everyone else from shadow. maybe you need to configure pam module? > ---Aki TuomiDovecot oy > > -------- Original message -------- > From: Mark Foley <mfoley(a)ohprs.org> > Date: 03/12/2017 06:03 (GMT+02:00) > To: dovecot(a)dovecot.org > Subject: Howto authenticate smartPhone via Active Directory > I have a Samba4 Active Directory server. Dovecot authenticates AD Users with domain credentials > using GSSAPI (Thunderbird client). I believe I have Dovecot set to attempt authentication via > shadow first and. failing that, it does authenticate via GSSAPI. > > Smartphones connect to Dovecot via port 143 and SSL. They are not domain members so if the > shadow authentication fails, no other methods are tried and no connection is made. > > What can I do with my dovecot config to fix this? > > > doveconf -n > # 2.2.15: /usr/local/etc/dovecot/dovecot.conf > # OS: Linux 4.4.88 x86_64 Slackware 14.2 > auth_debug = yes > auth_debug_passwords = yes > auth_gssapi_hostname = $ALL > auth_krb5_keytab = /etc/dovecot/dovecot.keytab > auth_mechanisms = plain login gssapi > auth_use_winbind = yes > auth_username_format = %n > auth_verbose = yes > auth_verbose_passwords = plain > disable_plaintext_auth = no > info_log_path = /var/log/dovecot_info > mail_location = maildir:~/Maildir > passdb { > driver = shadow > } > protocols = imap > ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2016-08-10/54e789087d419b6e.crt > ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/mail.ohprs.org.key > userdb { > driver = passwd > } > verbose_ssl = yes > > Thanks, Mark

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Upgrade to 2.2.32 from 2.2.15 failed
by Mark Foley 03 Dec '17

03 Dec '17

I have a problem. I have been running Dovecot 2.2.15 and I'd like to upgrade. My distro (Slackware) has dovecot 2.2.32 available. I downloaded and installed that, but it didn't work. No one was able to get messages from the dovecot server on their workstations. The following is the entire dovecot log file from startup to the last message generated. No more messages went into the logfile after line 76, even with clients trying to connect. The 174.233.134.88 IP is from an external user connecting from his iPhone. The normal successful message from this user are shown at bottom. I'm suspecting something to do with line 18 where is says "Auth process broken." If anyone has any insight I'd deeply appreciate it as I'd love to upgrade. THX -- Mark 1 Nov 24 19:22:24 master: Info: Dovecot v2.2.32 (dfbe293d4) starting up for imap (core dumps disabled) 2 Nov 24 19:22:24 ssl-params: Info: Generating SSL parameters 3 Nov 24 19:22:26 ssl-params: Info: SSL parameters regeneration completed 4 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [174.233.134.88] 5 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [174.233.134.88] 6 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client hello A [174.233.134.88] 7 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server hello A [174.233.134.88] 8 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write certificate A [174.233.134.88] 9 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write key exchange A [174.233.134.88] 10 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server done A [174.233.134.88] 11 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data [174.233.134.88] 12 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client certificate A [174.233.134.88] 13 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A [174.233.134.88] 14 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A [174.233.134.88] 15 Nov 24 19:23:02 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 16 Nov 24 19:23:02 auth: Debug: Module loaded: /usr/lib64/dovecot/auth/lib20_auth_var_expand_crypt.so 17 Nov 24 19:23:02 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 18 Nov 24 19:23:02 imap-login: Info: Disconnected: Auth process broken (disconnected before auth was ready, waited 0 secs): user=<>, rip=174.233.134.88, lip=98.102.63.107, TLS handshaking, session=<idAcrMNe8xqu6YZY> 19 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [174.233.134.88] 20 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [174.233.134.88] 21 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client hello A [174.233.134.88] 22 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server hello A [174.233.134.88] 23 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write certificate A [174.233.134.88] 24 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write key exchange A [174.233.134.88] 25 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server done A [174.233.134.88] 26 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data [174.233.134.88] 27 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client certificate A [174.233.134.88] 28 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A [174.233.134.88] 29 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A [174.233.134.88] 30 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client key exchange A [174.233.134.88] 31 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read certificate verify A [174.233.134.88] 32 Nov 24 19:23:02 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read finished A [174.233.134.88] 33 Nov 24 19:23:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read finished A [174.233.134.88] 34 Nov 24 19:23:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write change cipher spec A [174.233.134.88] 35 Nov 24 19:23:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write finished A [174.233.134.88] 36 Nov 24 19:23:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data [174.233.134.88] 37 Nov 24 19:23:03 imap-login: Debug: SSL: where=0x20, ret=1: SSL negotiation finished successfully [174.233.134.88] 38 Nov 24 19:23:03 imap-login: Debug: SSL: where=0x2002, ret=1: SSL negotiation finished successfully [174.233.134.88] 39 Nov 24 19:23:04 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 40 Nov 24 19:23:04 auth: Debug: Module loaded: /usr/lib64/dovecot/auth/lib20_auth_var_expand_crypt.so 41 Nov 24 19:23:04 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 42 Nov 24 19:23:04 imap-login: Info: Disconnected: Auth process broken (disconnected before auth was ready, waited 2 secs): user=<>, rip=174.233.134.88, lip=98.102.63.107, TLS, session=<YGw7rMNe+Rqu6YZY> 43 Nov 24 19:23:04 imap-login: Debug: SSL alert: close notify [174.233.134.88] 44 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization [174.233.134.88] 45 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization [174.233.134.88] 46 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client hello A [174.233.134.88] 47 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server hello A [174.233.134.88] 48 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write certificate A [174.233.134.88] 49 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write key exchange A [174.233.134.88] 50 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server done A [174.233.134.88] 51 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data [174.233.134.88] 52 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client certificate A [174.233.134.88] 53 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A [174.233.134.88] 54 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A [174.233.134.88] 55 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client key exchange A [174.233.134.88] 56 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read certificate verify A [174.233.134.88] 57 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read finished A [174.233.134.88] 58 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read finished A [174.233.134.88] 59 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write change cipher spec A [174.233.134.88] 60 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write finished A [174.233.134.88] 61 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data [174.233.134.88] 62 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x20, ret=1: SSL negotiation finished successfully [174.233.134.88] 63 Nov 24 19:23:05 imap-login: Debug: SSL: where=0x2002, ret=1: SSL negotiation finished successfully [174.233.134.88] 64 Nov 24 19:23:08 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 65 Nov 24 19:23:08 auth: Debug: Module loaded: /usr/lib64/dovecot/auth/lib20_auth_var_expand_crypt.so 66 Nov 24 19:23:08 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 67 Nov 24 19:23:08 imap-login: Info: Disconnected: Auth process broken (disconnected before auth was ready, waited 3 secs): user=<>, rip=174.233.134.88, lip=98.102.63.107, TLS, session=<7ZF4rMNe8hqu6YZY> 68 Nov 24 19:23:08 imap-login: Debug: SSL alert: close notify [174.233.134.88] 69 Nov 24 19:23:16 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 70 Nov 24 19:23:16 auth: Debug: Module loaded: /usr/lib64/dovecot/auth/lib20_auth_var_expand_crypt.so 71 Nov 24 19:23:16 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 72 Nov 24 19:23:16 imap-login: Info: Disconnected: Auth process broken (disconnected before auth was ready, waited 0 secs): user=<>, rip=192.168.0.54, lip=192.168.0.2, session=<6bbyrMNeGM/AqAA2> 73 Nov 24 19:24:13 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 74 Nov 24 19:24:13 auth: Debug: Module loaded: /usr/lib64/dovecot/auth/lib20_auth_var_expand_crypt.so 75 Nov 24 19:24:13 auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth 76 Nov 24 19:24:13 imap-login: Info: Disconnected: Auth process broken (disconnected before auth was ready, waited 0 secs): user=<>, rip=192.168.0.52, lip=192.168.0.2, session=<b75YsMNeb9nAqAA0> Normal OK messages from dovecot 2.2.15: Nov 24 23:50:49 imap-login: Debug: SSL: where=0x20, ret=1: SSL negotiation finished successfully [174.233.134.88] Nov 24 23:50:49 imap-login: Debug: SSL: where=0x2002, ret=1: SSL negotiation finished successfully [174.233.134.88] Nov 24 23:50:49 auth: Debug: client in: AUTH 1 PLAIN service=imap secured session=vQnEacde6QCu6YZY lip=98.102.63.107 rip=174.233.134.88 lport=993 rport=6889 resp=AG0udGhlbQAhbXRfMTAxOQ== (previous base64 data may contain sensitive data) Nov 24 23:50:49 auth-worker(17650): Debug: shadow(m.them,174.233.134.88): lookup Nov 24 23:50:49 auth: Debug: client passdb out: OK 1 user=m.them Finally, the 2.2.15 doveconf, which I used the same for 2.2.32: > doveconf -n # 2.2.15: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 4.4.88 x86_64 Slackware 14.2 auth_debug = yes auth_debug_passwords = yes auth_gssapi_hostname = $ALL auth_krb5_keytab = /etc/dovecot/dovecot.keytab auth_mechanisms = plain login gssapi auth_use_winbind = yes auth_username_format = %n auth_verbose = yes auth_verbose_passwords = plain disable_plaintext_auth = no info_log_path = /var/log/dovecot_info mail_location = maildir:~/Maildir passdb { driver = shadow } protocols = imap ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2016-08-10/54e789087d419b6e.crt ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/mail.ohprs.org.key userdb { driver = passwd } verbose_ssl = yes

3 4

Dovecot (doveadm, ssl, sync) - SSL error
by Arkadiusz Majewski 03 Dec '17

03 Dec '17

Hello! I've got a problem to run syncing between both dovecot services on the separate servers. The error indicates to the problem with SSL. Directly using openssl command to connect from one server to other and vice versa is passed without any errors. OS: FreeBSD 11.1-RELEASE-p4 Dovecot: 2.2.33.2_2 and the older one dovecot-2.2.32.1_1 (or similar) - build by ports. OpenSSL: 1.0.2k-freebsd 26 Jan 2017 dovecot: doveadm(10.18.1.15): Error: doveadm client disconnected before handshake: SSL_accept() failed: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol dovecot.conf (on both servers): mail_plugins = $mail_plugins notify replication service replicator { process_min_avail = 1 } service aggregator { fifo_listener replication-notify-fifo { user = dovecot } unix_listener replication-notify { user = dovecot } } service replicator { unix_listener replicator-doveadm { mode = 0600 } } replication_max_conns = 10 service doveadm { inet_listener { port = 12130 ssl = yes } } ssl = required ssl_protocols = SSLv3 TLSv1 TLSv1.1 TLSv1.2 ssl_cert = </usr/local/etc/dovecot/ssl/cert.crt ssl_key = </usr/local/etc/dovecot/ssl/cert.key ssl_client_ca_file = </usr/local/etc/dovecot/ssl/ca.pem ssl_client_ca_dir = /usr/local/etc/dovecot/ssl Thank you in advance for any help. Kind Regards, Arkadiusz Majewski

1 0

doveadm with 2-level user/domain quotas scheme
by Max Kostikov 03 Dec '17

03 Dec '17

Hi! I believe now it a right time to return to previous discussion about Dovecot's in 2-level user/domain quotas scheme wich was finished here https://dovecot.org/pipermail/dovecot/2015-October/102346.html Here is configuration. 1. Dictionary storage placed in MySQL table "quota2" root@localhost [(none)]> SHOW COLUMNS FROM quota2 FROM exim; +----------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +----------+--------------+------+-----+---------+-------+ | username | varchar(100) | NO | PRI | NULL | | | bytes | bigint(20) | NO | | 0 | | | messages | int(11) | NO | | 0 | | +----------+--------------+------+-----+---------+-------+ 3 rows in set (0,00 sec) 2. Two types of quota - for domains with index "2" and for users without index. ... plugin { quota = dict:user_quota::proxy::sqluserquota quota_rule2 = Trash:storage=+10%% quota_rule3 = Junk:storage=+10%% quota_warning = storage=100%% quota-exceeded 100 %u quota_warning2 = storage=95%% quota-warning 95 %u quota_warning3 = storage=90%% quota-warning 90 %u quota_warning4 = storage=75%% quota-warning 75 %u quota2 = dict:domain_quota:%d:proxy::sqldomainquota } dict { sqluserquota = mysql:/usr/local/etc/dovecot/dovecot-dict-sql-user.conf sqldomainquota = mysql:/usr/local/etc/dovecot/dovecot-dict-sql-domain.conf } service dict { unix_listener dict { user = mailnull mode = 0660 } } ... 3. Both stored in the same table and files "dovecot-dict-sql-user.conf" and "dovecot-dict-sql-domain.conf" are identical. connect = host=localhost dbname=exim user=user password=password map { pattern = priv/quota/storage table = quota2 username_field = username value_field = bytes } map { pattern = priv/quota/messages table = quota2 username_field = username value_field = messages } All quotas for users and domains are calculates correctly until "doveadm quota recalc" use. root@beta:~ # doveadm quota recalc -u foo(a)my.domain root@beta:~ # doveadm quota get -u foo(a)my.domain Quota name Type Value Limit % user_quota STORAGE 7850978 - 0 user_quota MESSAGE 32474 - 0 domain_quota STORAGE 7850978 - 0 domain_quota MESSAGE 32474 - , 0 If we look at MySQL table directly foo(a)my.domain quota was counted right but last users data was copied into domains values. ... root@localhost [exim]> SELECT * FROM quota2 WHERE username LIKE '%my.domain'; +-------------------+-------------+----------+ | username | bytes | messages | +-------------------+-------------+----------+ | foo(a)my.domain | 8039401321 | 32474 | | my.domain | 8039401321 | 32474 | | john(a)my.domain | 3455382803 | 11142 | | mary(a)my.domain | 544637146 | 1965 | +-------------------+-------------+----------+ 4 rows in set (0.00 sec) ... Also you may see that "doveadm quota get" above gave wrong values. For domain its produces empty output root@beta:~ # doveadm quota get -u my.domain doveadm(my.domain): Error: User doesn't exist Quota name Type Value Limit % Than if we are trying to calculate quota for domain or for all users (-A) it produces an error. root@beta:~ # doveadm quota recalc -u my.domain doveadm(my.domain): Error: User doesn't exist root@beta:~ # doveadm quota recalc -A Error: User listing returned failure doveadm: Error: Failed to iterate through some users So "doveadm quota" almost useless for such quotas scheme except single user. I wrote small shell-script "dovequota.sh" to resolve this issue but I believe that doveadm need to be fixed too. (script may be found here https://kostikov.co/problemy-uchyota-domennoj-kvoty-v-dovecot-2) -- With best regards, Max Kostikov BBM: 24CA5DF8 | W: https://kostikov.co

1 0

Re: Howto authenticate smartPhone via Active Directory
by Aki Tuomi 03 Dec '17

03 Dec '17

Actually you are authenticating gssapi clients from ad and everyone else from shadow. maybe you need to configure pam module? ---Aki TuomiDovecot oy -------- Original message --------From: Mark Foley <mfoley(a)ohprs.org> Date: 03/12/2017 06:03 (GMT+02:00) To: dovecot(a)dovecot.org Subject: Howto authenticate smartPhone via Active Directory I have a Samba4 Active Directory server. Dovecot authenticates AD Users with domain credentials using GSSAPI (Thunderbird client). I believe I have Dovecot set to attempt authentication via shadow first and. failing that, it does authenticate via GSSAPI. Smartphones connect to Dovecot via port 143 and SSL. They are not domain members so if the shadow authentication fails, no other methods are tried and no connection is made. What can I do with my dovecot config to fix this? > doveconf -n # 2.2.15: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 4.4.88 x86_64 Slackware 14.2 auth_debug = yes auth_debug_passwords = yes auth_gssapi_hostname = $ALL auth_krb5_keytab = /etc/dovecot/dovecot.keytab auth_mechanisms = plain login gssapi auth_use_winbind = yes auth_username_format = %n auth_verbose = yes auth_verbose_passwords = plain disable_plaintext_auth = no info_log_path = /var/log/dovecot_info mail_location = maildir:~/Maildir passdb { driver = shadow } protocols = imap ssl_cert = </etc/ssl/certs/OHPRS/GoDaddy/Apache/2016-08-10/54e789087d419b6e.crt ssl_key = </etc/ssl/certs/OHPRS/GoDaddy/mail.ohprs.org.key userdb { driver = passwd } verbose_ssl = yes Thanks, Mark

1 0

mmap() Error, Invalid Argument - Double slash in path?
by GE Junk 02 Dec '17

02 Dec '17

I get a ton of these mmap() errors in the log. I noticed there's a double slash before Maildir. Is this normal? Config error? Dovecot bug? dovecot: imap(email(a)email.net): Error: mmap() failed with file /shares/email/vmail/vmail1/email.net/e/m/a/email-2017.02.25.08.09.39//Maildir/dovecot.index.cache: Invalid argument I'm running dovecot version 2.2.22 Thanks Eric

2 2

Re: Lua Auth
by Aki Tuomi 02 Dec '17

02 Dec '17

-------- Original message --------From: Mark Moseley <moseleymark(a)gmail.com> Date: 02/12/2017 02:34 (GMT+02:00) To: Cc: Dovecot Mailing List <dovecot(a)dovecot.org> Subject: Re: Lua Auth On Thu, Nov 30, 2017 at 5:26 AM, Stephan Bosch <s.bosch(a)ox.io> wrote: > > > Op 29-11-2017 om 6:17 schreef Aki Tuomi: > >> On November 29, 2017 at 4:37 AM Mark Moseley <moseleymark(a)gmail.com> >>> wrote: >>> >>> >>> Just happened to be surfing the docs and saw this. This is beyond >>> awesome: >>> >>> https://wiki2.dovecot.org/AuthDatabase/Lua >>> >>> Any words of wisdom on using it? I'd be putting a bunch of mysql logic in >>> it. Any horrible gotchas there? When it says 'blocking', should I assume >>> that means that a auth worker process will *not* accept any new auth >>> lookups until both auth_passdb_lookup() and auth_userdb_lookup() have >>> completed (in which I'd be doing several mysql calls)? If that's the >>> case, >>> I assume that the number of auth workers should be bumped up. >>> >>> And is a 2.3 release fairly imminent? >>> >> Hi! >> >> This feature was added very recently, and there is very little >> operational experience on it. As the docs should say, blocking=yes means >> that an auth worker is used, and yes, it will block each auth worker during >> authentication, but what we tried, it should perform rather nicely. >> >> The most important gotcha is to always test your lua code rigorously, >> because there is not much we can do to save you. >> >> It should be present in master branch, so if someone feels like trying it >> out, please let us know if you find any bugs or strangeness. It's not >> present in nightlies yet. >> >> We are planning on releasing 2.3.0 this year. >> > > The Xi package builder has this feature enabled since yesterday. It is > available in the dovecot-lua package; the first Xi package that doesn't > have an official Debian equivalent (yet anyway). > > > I've been playing with Lua auth and so far no issues. I was previously putting together a very ugly MySQL stored procedure. Using Lua would be a lot easier (esp when it comes to returning an arbitrary number of columns). I'd love to see any test Lua code that the dovecot team has been playing around with (and realize it's not remotely production-ready, so don't worry about caveats I did have a couple of questions though: 1) Is the data returned by Lua auth not cacheable? I've got the following settings (and I'm just using Lua in the userdb lookup, not passdb -- passdb is doing a lightweight SQL lookup for username/password): auth_cache_negative_ttl = 1 mins auth_cache_size = 10 M auth_cache_ttl = 10 mins but I notice that every time I auth, it'll redo all the queries in my Lua code. I'd have expected that data to be served out of cache till the 10min TTL is up 2) Is there an appropriate way to return data with spaces in it (or presumably other non-alphanum chars. My quota name had a space in it, which somehow got interpreted as 'yes' , i.e.: imap: Error: Failed to initialize quota: Invalid quota root quota: Unknown quota backend: yes I simply changed the space to an underscore as a workaround, but I'm curious if there's a better way. I tried various quoting without success. Didn't try escaping yet. 3) Can you elaborate on the "auth_request#response_from_template(template)" and "auth_request#var_expand(template)" functions? Specifically how to use them. I'm guessing that I could've used one of them to work around #2 (that it would have done the escaping for me) Thanks! ----- 1) I'll have to check this. 2) Instead of string, return a key value table. you can have spaces in values. 3) response_from_template expands a key=value string into table by var expanding values. var_expand can be used to interpolation for any purposes. it returns a string. see https://wiki.dovecot.org/Variables for details on how to use it. Individual variable access is more efficient to do directly. --- Aki Tuomi

1 0

Re: iPhone/iPad IMAP connection bursts causes user+IP exceeded
by Joseph Tam 02 Dec '17

02 Dec '17

"David.M.Clark" <david(a)davrom.com> wrote: > I have modified mail_max_userip_connections to 400 which made no difference. > > The end user customer actually had Apple remote into their device and > they were impressed that the end user knew their IMAP settings. They > tested it and during this connection time, it worked as expected with > send and receive of e-mails. After Apple support disconnected from the > device, it not longer worked. I'm not sure your problem is the same as mine. Apart from getting a lot of these log messages ... Oct 24 21:32:54 server dovecot: imap-login: Maximum number of connections from user+IP exceeded (mail_max_userip_connections=12): user=<user> my users are not reporting any functional problems. I investigated this a little further. I bumped mail_max_userip_connections to 100, and looked at one of these connection bursts for one of my users. What I found was that it would steadily open new connections, hit the cap, then disconnect them all, and start the cycle over again. However, it would stop when the total number of connections made roughly equal to the number of mailboxes the user had. So a rough algorithm for these clients is for each mailbox[1..n] { if open mailbox[i] { ... do operation ... } else { // Hit cap close all open mailboxes } } close all open mailbox For example, if the user has 13 mailboxes and mail_max_userip_connections=5, you would see (c=connect, d=disconnect, m=max log lessage): ccccc m ddddd ccccc m ddddd ccc ddd I'm not sure whether the reader client displays partial results, or it collects all the results when the entire operation finishes. So the final effect I saw of bumping mail_max_userip_connections from the server perspective is that I get fewer "Maximum number of connections" log messages. Joseph Tam <jtam.home(a)gmail.com>

1 0

client unable to send mail, dovecot-imap errors
by GE Junk 02 Dec '17

02 Dec '17

Hi, I have an email client that is currently unable to send mail through imap. I am getting a ton of errors in dovecot-imap.log. All of these errors continue to show up, even after purging the dovecot*.* files from the offending folders. This happens to all email accounts on the server. Clearing the cache files doesn't fix, the error appears pretty much immediately after the new cache is generated. ============================== Error: mmap() failed with file path/Maildir/dovecot.index.cache: Invalid argument ============================== These errors are associated with an account unable to send right now. They seem to have only started since the send problem started. ============================== Error: Corrupted transaction log file path/Maildir/dovecot.index.log seq 5: indexid changed 1512100549 -> 1512183737 (sync_offset=0) Error: Index path/Maildir/dovecot.index: Lost log for seq=5 offset=12576: Failed to map file seq=178 offset=40..18446744073709551615 (ret=0) Warning: fscking index file path/Maildir/dovecot.index Error: Fixed index file path/Maildir/dovecot.index: log_file_seq 5 -> 179 IMAP session state is inconsistent, please relogin. in=26 out=1276 ============================== This error is also associated with the offending email client ============================== message repeated 9 times: [ imap(emailaddress): Error: Transaction log path/Maildir/dovecot.index.log: duplicate transaction log sequence (2)] ============================== Some additional info: dovecot: 2.2.22 (fe789d2) Ubuntu Server 16.04 Running on a qemu VM installed on an Unraid 6.3.5 Server 4GB RAM mail folder is located on virtio 9p2000 host passthru fs located on the same physical machine as the VM. Anyone have any ideas? Need additional information? Thanks, Eric

1 0

Lua Auth
by Mark Moseley 02 Dec '17

02 Dec '17

Just happened to be surfing the docs and saw this. This is beyond awesome: https://wiki2.dovecot.org/AuthDatabase/Lua Any words of wisdom on using it? I'd be putting a bunch of mysql logic in it. Any horrible gotchas there? When it says 'blocking', should I assume that means that a auth worker process will *not* accept any new auth lookups until both auth_passdb_lookup() and auth_userdb_lookup() have completed (in which I'd be doing several mysql calls)? If that's the case, I assume that the number of auth workers should be bumped up. And is a 2.3 release fairly imminent?

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Autoreplies are not sent
by Sergio Belkin 01 Dec '17

01 Dec '17

Hi, Let's say I have 2 domains: - Virtual Mailbox Domain: example.local (internal domain) - Virtual Alias Domain: example.com (public domain) Every mail sent to @example.com is really sent to @example.local. I have a virtual alias that forward mails sent to support-abc(a)example.com is sent finally to: op1(a)example.local Now, I'd want to every mail was sent to support-abc(a)example.com it triggers an autoreply vacation style. So, I've wrote and compiled a sieve filter, something like that and put in op1(a)example.local sieve folder. But it fails complaining like that: nov 29 15:55:39 muteriver.example.local dovecot[12549]: lmtp(12675, op1(a)example.local) CqNdF6sCH1qDMQAAcSFsIQ: sieve: msgid=< ded22f3d-f1e3-157e-0667-ca73d851d1a8(a)example.com>: discarding vacation response for implicitly delivered message; no known (envelope) recipient address found in message headers (recipient=<op1(a)example.local>, and additional `:addresses' are specified) I've tried appending in dovecot configuration: lda_original_recipient_header = X-Original-To But it does not work either. Using: dovecot-pigeonhole-2.2.10-8.el7.centos.x86_64 and postfix-2.10.1-6.el7.x86_64 Please could you help me? Thanks in advance! -- -- Sergio Belkin LPIC-2 Certified - http://www.lpi.org

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