- dovecot - dovecot.org

[Dovecot] shared folder
by Eric Broch 28 Feb '11

28 Feb '11

Hello list, I have dovecot-1.2.3 installed on my mail server. I created a shared directory which works fine, however, this shared directory has over 16GB of email and when users, 40 to 50 of them, login to their IMAP account and download of the contents of this shared folder begins on their machines it bogs down the server to a crawl. I had to comment out the share it was so bad. Is there a way to implement permissions on the shared folder and add 1 or 2 users at a time so as not to bog down the server. Eric Broch

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[Dovecot] error - dovecot - child (login) killed with signal 16
by Chris Hoogendyk 28 Feb '11

28 Feb '11

We've been happily running Dovecot in Solaris 10 for about 8 months now. Yesterday, Solaris 10's SMF put it in maintenance mode (shut it down) seemingly out of the blue. The only thing going on was that I had updated the ssl certificate. We had previously been using a self signed cert. Now we have a cert from InCommon. We had a problem with a few users who are still on ancient Eudora and didn't have the proper authority chains. We had a problem with a few Thunderbird users who hadn't set up the fully qualified server name in their configuration. The shutdown was coincident (and could be just a coincidence) to the minute with my boss working with a Windows Thunderbird user to change their configuration. I can't figure out how this happened or why. I don't see how to track it any further than what I have here, and it doesn't make sense that a user issue or process could cause this. The IP, by the way, is our NAT. So no way of telling much from that. From /var/adm/dovecot.log: Feb 24 15:52:57 marlin dovecot: [ID 583609 local2.error] dovecot: child 21233 (login) killed with signal 16 (ip=128.119.55.8) Feb 24 15:52:58 marlin dovecot: [ID 583609 local2.warning] dovecot: Killed with signal 15 (by pid=26750 uid=0 code=kill) Note that the first line is logged as an error. These items from the SMF service log for dovecot: [ Feb 24 15:52:58 Stopping because process received fatal signal from outside the service. ] [ Feb 24 15:52:58 Executing stop method ("/etc/mail/svc/method/dovecot.init.d stop") ] Stopping Dovecot are the source of the signal 15 in the second line of the dovecot log above. So, the presumption is that the signal 16 precipitated SMF to put the service in maintenance mode which lead to the signal 15. Any ideas what went wrong here? How to track it down? How to prevent it from happening again? Doing `svcadm clear dovecot` cleared the maintenance mode and started it up again. No problems since. -- --------------- Chris Hoogendyk - O__ ---- Systems Administrator c/ /'_ --- Biology& Geology Departments (*) \(*) -- 140 Morrill Science Center ~~~~~~~~~~ - University of Massachusetts, Amherst <hoogendyk(a)bio.umass.edu> --------------- Erdös 4

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[Dovecot] Dovequota Mbox - NFS - Quota Does not work
by Il Neofita 28 Feb '11

28 Feb '11

Hi I am not able to get the quota out from dovecot I have tried with thunderbird and roundcube without luck this is my conf # 2.0.beta6 (3156315704ef): /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-71.14.1.el6.x86_64 x86_64 Red Hat Enterprise Linux Server release 6.0 (Santiago) mail_debug = yes mail_location = mbox:~/mail:INBOX=/mail/spool/%u:INDEX=/mail/indexes/%u mbox_write_locks = fcntl passdb { driver = pam } plugin { mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size quota = fs:INBOX:mount=/mail quota2 = fs:ROOT:mount=/home } ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { driver = passwd } protocol imap { imap_logout_format = bytes=%i/%o mail_max_userip_connections = 10 mail_plugins = imap_quota quota } What I am doing wrong?

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[Dovecot] Error: Guid Mismatch
by Vicente Falco 28 Feb '11

28 Feb '11

Hello Good morning, I am working with Dovecot 2.9 but when i delete one or several messages if appears in the message log ," imap(v.falco): Error: Mailbox Trash: Expunged GUID mismatch for UID 2: d422593d8bbdc2f4ffaeba0175e2b42e vs 4ecbed318f63e3ab78c1b084e30da7db" Why? Thank you -- Salu2, Vicente Falcó

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[Dovecot] Problem to start Dovecot 2.0.9
by Sandra Weddig 27 Feb '11

27 Feb '11

Hello! I did run Dovecot 1.2 and now would like to run Dovecot 2.0.9 at my server. The server runs a Linux 2.6.37.1-1.2-desktop x86_64 GNU/Linux with OpenSuSE 11.4 RC2. Here is my doveconf -n: # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 2.6.37.1-1.2-desktop x86_64 openSUSE 11.4 (x86_64) ext4 auth_mechanisms = cram-md5 listen = * mail_location = maildir:/opt/Mails/maildir/%u/:INBOX=/opt/Mails/imap/%u managesieve_notify_capability = mailto 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 passdb { args = scheme-cram-md5 /etc/dovecot/cram-md5.pwd driver = passwd } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } ssl_cert = </etc/ssl/certs/dovecot.pem ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } When I execute rcdovecot start I get: Starting dovecot Fatal: execv(/usr/bin/doveconf) failed: Permission denied startproc: exit status of parent of /usr/sbin/dovecot: 84 failed but getfacl /usr/bin/doveconf says: # file: doveconf # owner: root # group: root user::rwx group::rwx other::rwx Any idea? -- NEU: FreePhone - kostenlos mobil telefonieren und surfen! Jetzt informieren: http://www.gmx.net/de/go/freephone

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[Dovecot] How do I use a username/password plain text file as authentication backend?
by Angus 26 Feb '11

26 Feb '11

I only have a single user (with multiple mail addresses) and I don't want to expose local users (no pam or /etc/passwd). Using a SQL database seems like overkill to me. So why not just a plain text file? Well, I've read http://wiki2.dovecot.org/PasswordDatabase/Static and related wiki pages, but I just can't find a clear answer. I certainly don't want to allow "any user" or "any password". Dovecot 2.0.9. Any hints for me?

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[Dovecot] mail from root rejected
by rh 25 Feb '11

25 Feb '11

I have dovecot mailserver running well. Everything is fine except that mails from root are rejected (some system processes are sending messages by mail using root as sender). In the logfile i get: Feb 25 10:05:51 Beethoven postfix/qmgr[5228]: 0C7A8652489: from=<root@mydomain>, size=893, nrcpt=1 (queue active) Feb 25 10:05:51 Beethoven postfix/smtp[5662]: 0C7A8652489: to=<hnat@mydomain>, relay=smtp.inode.at[62.99.194.14]:25, delay=0.08, delays=0.04/0/0.02/0.01, dsn=5.0.0, status=bounced (host smtp.inode.at[62.99.194.14] said: 550-Verification failed for <root@mydomain> 550-Unrouteable address 550 Sender verify failed (in reply to MAIL FROM command)) What can i do to have these mails forwarded? Thanks in advanve for yout tips

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[Dovecot] LDAP and GSSAPI problems
by Trever L. Adams 25 Feb '11

25 Feb '11

This is a continuation of a problem I have been having. Samba 4 has recently changed to require binds. I need LDAP to verify users exist. I am using Kerberos (GSSAPI) as the passdb. Samba can handle GSSAPI/Kerberos SASL binds. I have the following in my dovecot-ldap setup for userdb: dn = smtp/mailhost.example.org(a)EXAMPLE.ORG sasl_bind = yes sasl_mech = GSSAPI sasl_realm = EXAMPLE.ORG sasl_authz_id = smtp/mailhost.example.org(a)EXAMPLE.ORG Which gives me the following error. Debug: ldap(trever): user search: base=dc=example,dc=org scope=subtree filter=(&(objectClass=person)(|(mail=trever)(sAMAccountName=trever)(userPrincipalName=trever))) fields=userPrincipalName dovecot: auth: Error: LDAP: binding failed (dn smtp/mailhost.example.org(a)EXAMPLE.ORG) Local error, SASL(-1): generic failure: GSSAPI Error: Unspecified GSS failure. Minor code may provide more information (Credentials cache file '/tmp/krb5cc_97' not found) Additionally, I have "auth_krb5_keytab = /etc/dovecot/krb5.keytab" setup for the GSSAPI user login. The credential cache should be that file should it not? If not, how do I go about setting that up so that it will work. Thank you, Trever -- "The only true happiness comes from squandering ourselves for a purpose." -- William Cowper

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[Dovecot] Sendmail and Dovecot deliver (dovecot-lda)
by Giles Coochey 24 Feb '11

24 Feb '11

Hi, I have a Centos 5 system with sendmail running as my MTA. Normally I note from sendmail logs that mails get delivered using the 'local' mailer. I have therefore entered the following into my sendmail.mc file, from an earlier post on this list: define(`LOCAL_MAILER_PATH',`/usr/libexec/dovecot/deliver') define(`LOCAL_MAILER_FLAGS',`DFMPhfnu9') define(`LOCAL_MAILER_ARGS',`deliver -d $u') However, when sendmail tries to use deliver I just get this message: Feb 13 15:37:23 gate sendmail[1399]: p1DEWtc2021995: to=<user(a)example.org>, delay=00:04:28, xdelay=00:00:00, mailer=local, pri=121665, dsn=4.0.0, stat=Deferred: local mailer (/usr/libexec/dovecot/deliver) exited with EX_TEMPFAIL I've tried to get better logging by putting the following in 15-lda.conf in /etc/dovecot/conf.d: protocol lda { postmaster_address = postmaster(a)example.org auth_socket_path = /var/run/dovecot/auth-master mail_plugins = sieve mail_location = maildir:~/.maildir log_path = /var/log/dovecot-deliver.log info_log_path = /var/log/dovecot-deliver.log } I find nothing gets written to the log file, even if I make it a world writable file. Does anyone have any ideas? What are the best steps to get more information troubleshooting? -- Best Regards, Giles Coochey NetSecSpec Ltd NL T-Systems Mobile: +31 681 265 086 NL Mobile: +31 626 508 131 GIB Mobile: +350 5401 6693 Email/MSN/Live Messenger: giles(a)coochey.net Skype: gilescoochey

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[Dovecot] Running dovecot on embedded device?
by Jef Driesen 23 Feb '11

23 Feb '11

Hi, I'm considering buying a QNAP TS-212 NAS and I wonder if this device is powerful enough to run dovecot too (there is a pre-built dovecot package available from QNAP)? The main goal would be that my mail is stored centralized on the NAS, where I can access it from multiple systems without ending up with mail scattered over each system (which is exactly what is happening now due to the fact that my isp offers only POP3). There will only be a few users (e.g. family members), and incomming mail will be fetched from the isp mailbox. The specs of the QNAP TS-212 are: * ARM Marvell Kirkwood 1.2GHz CPU * 256MB DDRII RAM Is this sufficient to run dovecot, and will the performance be acceptable? I'm not expecting something lightning fast, but something that is acceptable. Jef

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