- dovecot - dovecot.org

RE: General IMAP question
by Joseph Tam 02 Sep '17

02 Sep '17

"Scott Techlist" <techlist06(a)msws.org> writes: > How will the IMAP account behave with the current mail_location setting below? > > mail_location = mbox:~/mail:INBOX=/var/mail/%u > > That is, where will the IMAP account's mail "go"? Right now it goes to > /var/mail/[localusername]. Maybe incorrectly, I assumed IMAP required > Maildir format? How are folders handled with this setting?. The one > IMAP account would be used for spamassassin training, it would need 2 > shared/public folders ("spam", "ham"). IMAP is a protocol: it does not dictate the storage format. You're free to use whatever format dovecot supplies a backend for, including mbox or maildir. What your mail_location specifies is that the INBOX is a mbox (not maildir) formatted file located at /var/mail/[localusername]. Other mailboxes are located in ~[localusername]/mail/* (also mbox formatted). If the IMAP account requires 2 externally supplied mailboxes or folders (spam, ham) accessible via IMAP, you'll either have to copy them into the IMAP user's mail/ folder, or setup special name spaces that maps to the mailboxes' path. The mailboxes need appropriate file permissions so that the IMAP user can access it. Joseph Tam <jtam.home(a)gmail.com>

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Sync mailservera!
by nlekkas＠gmail.com 02 Sep '17

02 Sep '17

Hello to all ! I have two servers using dovecot and want to sync them with doveasm ...... I am using usersb as user backend ....database Can anyone help me config them... Is there any use guide about it ? Thans in advance for the help ! Nick

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RE: General IMAP question
by Scott Techlist 01 Sep '17

01 Sep '17

Software is Centos7, Dovecot 2.2.10 >Use that single mailbox with IMAP, others stay to POP Thanks, I considered that and looked up the ways to restrict IMAP access. But: How will the IMAP account behave with the current mail_location setting below? mail_location = mbox:~/mail:INBOX=/var/mail/%u That is, where will the IMAP account's mail "go"? Right now it goes to /var/mail/[localusername]. Maybe incorrectly, I assumed IMAP required Maildir format? How are folders handled with this setting?. The one IMAP account would be used for spamassassin training, it would need 2 shared/public folders ("spam", "ham").

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problem with shared folders and acls - only able to share INBOX
by Christian Eisert 01 Sep '17

01 Sep '17

Hi everybody, I have a problem that I cannot share subfolders of the mailboxes INBOX , e.g. /Sent / Trash etc. but also no self created folders. The ACLs seem to be set right. I have the suspicion that the dictionary ( /var/lib/dovecot/db/shared-mailboxes.db ) is not updated - there are no entries for the sub folders I just cannot find the problem within my configuration. Many thanks for having a look at it. Cheers from Hamburg, Germany, Christian Configuration attached: ---------------------------------------------------------------------------- ---------------------------------- # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.9.0-3-amd64 x86_64 Debian 9.1 auth_debug = yes auth_mechanisms = plain login auth_verbose = yes mail_debug = yes mail_gid = vmail mail_home = /var/vmail/mailboxes/%d/%n mail_location = maildir:~/mail:LAYOUT=fs mail_plugins = acl mail_privileged_group = vmail mail_uid = vmail 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 index ihave duplicate mime foreverypart extracttext namespace { hidden = no ignore_on_failure = no inbox = no list = yes location = maildir:%%h/mail:INDEX=%h/shared/%%u:CONTROL=%h/shared/%%u:INDEXPVT=%h/share d/%%u prefix = shared/%%u/ separator = / subscriptions = yes type = shared } 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 } prefix = separator = / subscriptions = yes type = private } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db antispam_backend = pipe antispam_mail_notspam = learn_ham antispam_mail_sendmail = /usr/bin/rspamc antispam_mail_spam = learn_spam antispam_spam = Spam antispam_trash = Trash quota = maildir:User quota quota_exceeded_message = Benutzer %u hat das Speichervolumen überschritten. / User %u has exhausted allowed storage space. sieve = file:/var/vmail/sieve/%d/%n/scripts;active=/var/vmail/sieve/%d/%n/active-scr ipt.sieve sieve_before = /var/vmail/sieve/global/spam-global.sieve } protocols = imap lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } user = vmail } service managesieve-login { inet_listener sieve { port = 4190 } } ssl = required ssl_cert = </etc/letsencrypt/live/mail.mydomain.org/fullchain.pem ssl_cipher_list = EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA256:EECDH:+CAMELLIA128 :+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDE A:!ECDSA:kEDH:CAMELLIA128-SHA:AES128-SHA ssl_dh_parameters_length = 2048 ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol imap { imap_idle_notify_interval = 29 mins mail_max_userip_connections = 20 mail_plugins = acl quota imap_quota antispam imap_acl } protocol lmtp { mail_plugins = acl sieve postmaster_address = postmaster(a)mydomain.org } ---------------------------------------------------------------------------- ----------------------------------

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Re: General IMAP question
by Joseph Tam 01 Sep '17

01 Sep '17

"Scott Techlist" <techlist06(a)msws.org> writes: > Currently my POP users have a max mbox size but that is how much it > will store before they "come get it". I ensure they have at least one > device set to delete from the server periodically (i.e. 1 week). So > users with multiple devices get their mail duplciated on their devices > and at least one devices keeps the server emptied so their mbox does > not hit any limits. Traditionally, POP was a store and forward protocol. The client would download all the message in INBOX, them empty the mailbox. Nowadays, many POP users configure their clients to "Leave on server mode", which essentially accumulate on the server. The client may or may not also keep a cached copy. > As I understand it, when using IMAP, the user's messages are > perpetually stored on the server. IMAP is oriented as a remote mail service (client fetches and manipulate mail data on a remote server), so yes, messages are meant to remain on the server until deleted. There are probably some clients that cache local copies, but the remote server is considered canonical, so that local copies are deleted if the remote copies disappear. > How do other's deal with this? Am I misunderstanding something? As > popular as it seems to be, these seem like big hurdles to overcome. > Appreciate some help for a IMAP noob. What problem are you trying to solve? Is there a particularly compelling reason for you to move to IMAP (if not, stay with POP3)? You want to curtail space usage by users? You want to force users to retain client side copies of the messages? (Mind you, you'll still could have the same problem with POP -- there's nothing you can do to enforce the client to download/delete messages. Whether you use IMAP or POP3, you'll probably need some client side set up.) Joseph Tam <jtam.home(a)gmail.com>

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RE: Iterate All Dovecot Users !
by Nick Lekkas 31 Aug '17

31 Aug '17

Hi Thomas ! So simple.... But you save my ass ..... And yes it works ! Thanks a lot ! Really ! I appreciate it ! Thanks Nick -----Original Message----- From: Thomas Reifferscheid [mailto:thomas@reifferscheid.org] Sent: Thursday, August 31, 2017 10:49 PM To: nlekkas(a)gmail.com Subject: Re: Iterate All Dovecot Users ! Am 31.08.2017 um 18:18 schrieb Nick Lekkas: > Hello to all ! > > I am trying to write a script that iterate all users that are created in > dovecot and postfix .... > Is there any way ..? > Hi Nick for user in $(doveadm user -u '*'); do echo $user; done Thomas __________ Information from ESET Endpoint Antivirus, version of detection engine 16008 (20170831) __________ The message was checked by ESET Endpoint Antivirus. part000.txt - is OK http://www.eset.com __________ Information from ESET Endpoint Antivirus, version of detection engine 16008 (20170831) __________ The message was checked by ESET Endpoint Antivirus. Email message - is OK http://www.eset.com

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Iterate All Dovecot Users !
by Nick Lekkas 31 Aug '17

31 Aug '17

Hello to all ! I am trying to write a script that iterate all users that are created in dovecot and postfix .... Is there any way ..? Thanks in advance for your time ! Nick __________ Information from ESET Endpoint Antivirus, version of detection engine 16007 (20170831) __________ The message was checked by ESET Endpoint Antivirus. Email message - is OK http://www.eset.com

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General IMAP question
by Scott Techlist 31 Aug '17

31 Aug '17

My server is a limited space mailserver set up to filter spam. Most of it's mail is passed on ot an exchange server so it is not stored locally. I have a handful of pop accounts that are stored locally. For years I've used mbox type mailboxes that I'm familiar with and can access on the server when needed using the old mailx program. They use a variety of clinets, typically Outlook and smartphones. I'm considering changing to IMAP because I need a single IMAP mailbox for an unrelated reason. But I am concerned about user storage issues at least.. Currently my POP users have a max mbox size but that is how much it will store before they "come get it". I ensure they have at least one device set to delete from the server periodically (i.e. 1 week). So users with multiple devices get their mail duplciated on their devices and at least one devices keeps the server emptied so their mbox does not hit any limits. As I understand it, when using IMAP, the user's messages are perpetually stored on the server. So if the user is not moving their messages from their inbox to some other place (e.g. a different Outlook pst file), that all the messages will remain on the server. All messages are "synced" in the user's inbox or other user created folders. Is that right? This would pretty quickly cripple those normal non-computer types that have years of emails in their inboxes. And I don't have the storage space to allow storing years of their mail. I also understand if they exceed their storage limit, mail starts bouncing which is what's I'd expect. At first I started googling how to expire the old mail, but then realized that won't work because if I delete on the server, I understand that will delete on their devices, too. How do other's deal with this? Am I misunderstanding something? As popular as it seems to be, these seem like big hurdles to overcome. Appreciate some help for a IMAP noob. Thanks, Scott

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Strange folders
by Marti Markov 31 Aug '17

31 Aug '17

Hi all, I’ve been experiencing the “magical” creation of random folders on my mail server. I managed to catch the creation of one last night. Here is the log: Aug 30 01:38:13 mail dovecot: imap(f.lastName(a)domain.com): Debug: Namespace : /home/vmail/domain.com/f.lastName/Maildir/.wkkwgfrubwioniohkcyqttugdtdabuyn doesn't exist yet, using default permissions Aug 30 01:38:13 mail dovecot: imap(f.lastName(a)domain.com): Debug: Namespace : Using permissions from /home/vmail/domain.com/f.lastName/Maildir: mode=0700 gid=default Aug 30 01:38:13 mail dovecot: imap(f.lastName(a)domain.com): Debug: acl vfile: file /home/vmail/domain.com/f.lastName/Maildir/.wkkwgfrubwioniohkcyqttugdtdabuyn/dovecot-acl not found I have substituted only the username and the domain name. The folder name is as it was created: wkkwgfrubwioniohkcyqttugdtdabuyn There has been no activity logged on the exim4 side at that time. What would be the best course of action to determine what is happening?

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Segmentation fault with doveadm search
by Stefán Tamás 30 Aug '17

30 Aug '17

Hi, We have a Ubuntu 14.04 server with dovecot 2.2.9 If I try to run /usr/bin/doveadm search -u email(a)exmaple.com mailbox Junk savedbefore 30d It will dump a core file. We have a similar config on an other server and there is no problem there. Any ideas how to prevent the core dump? root@triws2:~# gdb --args doveadm search -u email(a)example.com mailbox Junk savedbefore 30d Reading symbols from doveadm...Reading symbols from /usr/lib/debug//usr/bin/doveadm...done. done. (gdb) run Starting program: /usr/bin/doveadm search -u email(a)example.com mailbox Junk savedbefore 30d Program received signal SIGSEGV, Segmentation fault. 0x0000000000000000 in ?? () (gdb) where #0 0x0000000000000000 in ?? () #1 0x00007ffff76ef1b5 in mailbox_get_metadata (box=box@entry=0x5555557e1c70, items=items@entry=MAILBOX_METADATA_GUID, metadata_r=metadata_r@entry=0x7fffffffe2f0) at mail-storage.c:1544 #2 0x0000555555570918 in cmd_search_box (info=<optimized out>, ctx=0x5555557c8230) at doveadm-mail-search.c:28 #3 cmd_search_run (ctx=0x5555557c8230, user=<optimized out>) at doveadm-mail-search.c:58 #4 0x0000555555569b5b in doveadm_mail_next_user (ctx=0x5555557c8230, input=<optimized out>, error_r=0x7fffffffe3f8) at doveadm-mail.c:314 #5 0x000055555556a8ac in doveadm_mail_cmd (argv=0x5555557c33b0, argc=7, cmd=0x5555557c7408) at doveadm-mail.c:525 #6 doveadm_mail_try_run (cmd_name=<optimized out>, argc=7, argv=0x5555557c3398) at doveadm-mail.c:617 #7 0x00005555555696d4 in main (argc=7, argv=0x5555557c3398) at doveadm.c:398 Üdvözlettel Stefán Tamás --------------------------------- domain > email > web >>> siker Numex Informatika Kft. Mobil: +36 20 956 0233, Tel: +36 1 205 3915 http://numex.hu

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