- dovecot - dovecot.org

[Dovecot] Sizing MTA servers
by Murray Trainer 18 Jan '14

18 Jan '14

Hi All, This is probably a bit off-topic but does anyone have any idea about sizing MTA servers. We have about 200,000 emails/hr incoming and outgoing. I am intending using Exim and Spamassassin on each MTA. How many servers using recent hardware would I need to cope with this mail throughput? What is more important on the servers, CPU or RAM? Should I have mail going both directions on each server or dedicate a pair each for incoming and outgoing mail> Thanks for any feedback. Murray

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[Dovecot] doveconf base_dir
by Andreas Schulze 18 Jan '14

18 Jan '14

Hello, today I run the command "doveadm auth cache flush" for the first time. # doveadm auth cache flush doveadm(root): Error: userdb lookup: connect(/var/run/dovecotauth-master) failed: No such file or directory 0 cache entries flushed # base_dir was the only item contain 'run' and it did not end with a / So I tried to set base_dir to /var/run/dovecot/ and could now rerun "doveadm auth cache flush" without problems. I compile dovecot from source and found --with-rundir=/var/run/dovecot as an option to configure. I changed to /var/run/dovecot/, recompile and removed the base_dir setting in dovecot.conf again. Now "doveadm auth cache flush" work out of the box. doveconf -d base_dir is var/run/dovecot/. Finaly I compiled dovecot with --localstatedir=/var and removed --with-rundir from configure. The resulting package had again base_dir = /var/run/dovecot so "doveadm auth cache flush" don't work. looks like somewhere the missing / should be added in case base_dir has no trailing / without special configuration. Andreas

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[Dovecot] imap abort after upgrade from 2.2.4 to 2.2.7
by morrison 17 Jan '14

17 Jan '14

Hi, I used to use dovecot 2.2.4. I saw lots of warnings saying 'Extension header update points outside header size'. I upgraded to dovecot 2.2.7, based on the discussion in mail list. Now, I see lots of imap aborts around: src/lib-index/mail-index-transaction-export.c:203: i_assert(u32.offset + u32.size <= ext_hdr_size); I also noticed, in some mailbox, imap process kept abort until all index files in the mailbox were manually deleted. Did someone run into the same problem and any solution to this? Thanks,

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[Dovecot] Dovecot IMAP proxy for gmail IMAP server
by CM Reddy 17 Jan '14

17 Jan '14

Hi All, I am experimenting to use Dovecot as an IMAP proxy to GMAIL server. I would like configure my localhost as an Dovecot IMAP proxy and trying to access my GMAIL using the Thunderbird email client. Please share the steps to configure and access my mails from GMAIL server. - Thanks CM Reddy

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[Dovecot] Use dovecot for enterprise
by ♥ NiNJA ♂ 17 Jan '14

17 Jan '14

Hi guys I like to know is it possible to create Unlimited number of email accounts with Unlimited Storage in each email ? Does anybody do it ? Does dovecot good enough for having more than millions of users ? Thanks :-)

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[Dovecot] Changing user specific configs one at a time using userdb text file to override defaults...
by Charles Marcus 17 Jan '14

17 Jan '14

Hi all, Ok, I'm now interested in testing converting users one at a time to mdbox+SIS, but want to make sure I understand how to do this. It appears the best way - for smaller installations at least - is to just use a simple text file userdb to override the defaults, then once all of the users have been converted, change the defaults and remove the userdb txt file overrides. So, would love to hear details from others who have done something like this. Thx! -- Best regards, Charles

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[Dovecot] Getting more out of the %w variable.
by Julian PG 17 Jan '14

17 Jan '14

Hello Dovecot community, I have a backend database application that handles all system wide user authentication (from web to mail and more). Passwords are not stored in plain text. So I would like to support more than PLAIN. Perhaps at least CRAM-MD5 or DIGEST-MD5 for example. Even though connections over TLS are encouraged (and even enforced). Some MUA and users still think its a better idea than PLAIN (even sent over an encrypted session). I have a vague memory of getting some warnings with thunderbird in regards to the use of PLAIN. Of course the %w variable would have to include the challenge as well as the response. Or perhaps even a seperate variable for the challenge? Or course at the moment the %w variable is an empty string for anything other than PLAIN. This would make some users and MUAs happy (even though pointless over TLS - I agree). Your thoughts would be appreciated. Regards, Julian. -- Not time for sigs!

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[Dovecot] Received: header showing 127.0.0.1 after switch to dovecot LDA?
by Charles Marcus 16 Jan '14

16 Jan '14

Hi all, I'm guessing this is correct behavior, but wanted to make sure... I noticed that for locally delivered messages (between 2 local users inside our domain, so they never leave the server), the first Received: header line content changed after I switched to the dovecot LDA. Before, using postfix/virtual for delivery, the header looked like this: Received: from [192.168.1.25] (client.example.com [192.168.1.25]) by smtp.example.com (Postfix) with ESMTPSA id 67E33A20542; Wed, 6 Jun 2012 10:55:55 -0400 (EDT) But now it looks like this: Received: from [127.0.0.1] (client.example.com.com [192.168.1.14]) by smtp.example.com (Postfix) with ESMTPSA id 4EEF7802AF325 for <me(a)example.com>; Wed, 15 Jan 2014 18:29:17 -0500 (EST) so, 2 questions... 1. Why does it show 127.0.0.1 instead of the client IP, and 2. Why did postfix/virtual include the "for <me(a)example.com>;" but the dovecot LDA doesn't? Thanks, -- Best regards, Charles

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[Dovecot] Replication file sizes
by IT geek 31 16 Jan '14

16 Jan '14

Hi, I'm using Dovecot 2.2.9 to replicate my mailbox to a remote server. My mailbox on ServerA is 235Mb, but on ServerB it ends up being 358Mb. Does anyone know why this is? Shouldn't they be the same size? doveconf -n from ServerA: # 2.2.9: /usr/pkg/etc/dovecot/dovecot.conf # OS: NetBSD 5.2 cobalt auth_mechanisms = plain login doveadm_password = secret doveadm_port = 12345 first_valid_uid = 1003 last_valid_uid = 1020 listen = 192.168.1.1 mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_plugins = " notify replication" passdb { driver = passwd } plugin { mail_replica = tcp:serverb.test.com } protocols = imap service aggregator { fifo_listener replication-notify-fifo { mode = 0666 } unix_listener replication-notify { mode = 0600 } } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } user = root } service doveadm { inet_listener { port = 12345 } } service imap-login { inet_listener imap { port = 0 } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 } } ssl_cert = </etc/openssl/certs/servera.test.com.crt ssl_key = </etc/openssl/private/serverb.test.com.key userdb { driver = passwd } protocol lda { postmaster_address = postmaster(a)test.com

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[Dovecot] Dovecot 2 separate login for POP3 connections ?
by BONNET, Frank 16 Jan '14

16 Jan '14

Hello Is it possible to configure a separate logfile for incoming POP3 connections ( dovecot 2.2.9 ) thanks

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