March 2016 - dovecot - dovecot.org

VS: Re: TLS handshake issue
by Aki Tuomi 17 Mar '16

17 Mar '16

openssl s_client -connect host:143 -starttls imap ---Aki TuomiDovecot oy-------- Alkuperäinen viesti --------Lähettäjä: John Oliver <joliver(a)john-oliver.net> Päivämäärä: 17.3.2016 20.11 (GMT+02:00) Saaja: dovecot(a)dovecot.org Aihe: Re: TLS handshake issue On Thu, Mar 17, 2016 at 08:30:32PM +0300, Andrey Fesenko wrote: > May be use -starttls imap or 993 port and more logs verbose_ssl=yes I am using verbose_ssl = yes Dovecot is currently working with SSL on 143, and I'm trying to not change current client config. As for '-starttls', in what context? -- *********************************************************************** * John Oliver http://www.john-oliver.net/ * * * ***********************************************************************

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Looking for way to monitor dsync, confirm it is or isn't running
by Rich Wales 17 Mar '16

17 Mar '16

I am syncing two Dovecot sites using the dsync function. I would like to be able to run some sort of periodic health check to confirm that dsync is (or is not) running properly between the two sites, and alert me if dsync is failing or lagging excessively. Does anyone know of a tool to do this? (If possible, something I can set up to run periodically in Nagios?) Thanks for any suggestions. Rich Wales richw(a)richw.org

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Xi has a new home
by Stephan Bosch 17 Mar '16

17 Mar '16

Hi, The automatic package builder Xi has moved to system within the Dovecot infrastructure. This also means that the repositories are available at a new host name: xi.dovecot.fi. The old host name still works and is a CNAME pointing to the new venue. I expect the old domain to be active for years to come. So, there is no need to update your /etc/apt/sources.list right away. Still, it is a good idea to do so. I've updated the wiki accordingly. Regards, Stephan.

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Re: spamc during dovecot-smtp delivery?
by madduck＠madduck.net 17 Mar '16

17 Mar '16

[cc'ing the list for posterity] also sprach Tolbert, Joshua P <jtolbert(a)illinois.edu> [2016-03-16 21:46 +0100]: > I’ve been working on a Postfix/Dovecot/sieve mail server migration > (from Sendmail/Dovecot/procmail) and ran in to a similar problem > to one you talked about a while ago on the dovecot mailing lists. > Did you ever find a good solution for running spamc as the > destination user in sieve? If you did, mind sharing? Thanks! I've never had a problem again since upgrading to Debian jessie, but I also think that the problem's solution was installing a NSS cache, because the deadlocks seemed to take place between Spamassassin and libnss-pgsql2. Transport from Postfix to Dovecot is lmtp:unix:private/dovecot-lmtp (no idea how to do that with Sendmail or why you'd want to use Sendmail) and then Dovecot's sieve is configured to run a filter using /etc/dovecot/sieve.before.d: require [ "vnd.dovecot.filter"]; filter "spamc" [ "--no-safe-fallback" ]; which is enabled in conf.d/90-sieve.conf with sieve_before = /etc/dovecot/sieve.before.d sieve_global_extensions = +vnd.dovecot.filter sieve_plugins = sieve_extprograms and in conf.d/90-sieve-extprograms.conf sieve_filter_bin_dir = /etc/dovecot/sieve-filter and then I made a simple symlink from /etc/dovecot/sieve-filter → /usr/bin/spamc Spamassassin starts with --create-prefs --helper-home-dir --allow-tell and the final step is to integrate the mail user database (vmm in my case) with libnss to provide spamassassin with a way to identify home directories. I use libnss-pgsql2. The /etc/nss-pgsql.conf file I use is available here: http://bugs.debian.org/818465 A successful delivery then looks like this: postfix/smtpd[29778]: connect from mail1.smtp.mailserver4.de[62.216.179.241] postfix/smtpd[29778]: 6D2F74024E: client=mail1.smtp.mailserver4.de[62.216.179.241] postfix/cleanup[32593]: 6D2F74024E: message-id=<xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxxxxxxxxxxxxxxxxx> postfix/smtpd[29778]: disconnect from mail1.smtp.mailserver4.de[62.216.179.241] dovecot: lmtp(3570): Connect from local spamd[2140]: spamd: connection from localhost [::1]:57032 to port 783, fd 6 spamd[2140]: spamd: setuid to xxxxxxx%yyyyyyyyyy.zz succeeded spamd[2140]: spamd: processing message <xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxxxxxxxxxxxxxxxxx> for xxxxxxx%yyyyyyyy.zz:70032 spamd[2140]: spamd: clean message (-1.9/5.0) for xxxxxxx%yyyyyyyy.zz:70032 in 3.0 seconds, 10222 bytes. spamd[2140]: spamd: result: . -1 - BAYES_00,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,RCVD_IN_DNSWL_NONE scantime=3.0,size=10222,user=xxxxxxx%yyyyyyyy.zz,uid=70032,required_score=5.0,rhost=localhost,raddr=::1,rport=57032,mid=<xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxxxxxxxxxxxxxxxxx>,bayes=0.000000,autolearn=ham autolearn_force=no dovecot: lmtp(3570, xxxxxxx(a)yyyyyyyy.zz) copy from (file): box=INBOX, uid=30613, msgid=<xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxxxxxxxxxxxxxxxxx>, size=10945 dovecot: lmtp(3570, xxxxxxx(a)yyyyyyyy.zz) QLZ6IoJ/6lbyDQAARsnb6w: sieve: msgid=<xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx@xxxxxxxxxxxxxxxxxxxxx>: stored mail into mailbox 'INBOX' postfix/lmtp[3569]: 6D2F74024E: to=<xxxxxxx(a)yyyyyyyy.zz>, orig_to=<aaaaaa(a)bbbbbbb.zz>, relay=ambassador.madduck.net[private/dovecot-lmtp], delay=5, delays=2/0.02/0.01/3, dsn=2.0.0, status=sent (250 2.0.0 <xxxxxxx(a)yyyyyyyy.zz> QLZ6IoJ/6lbyDQAARsnb6w Saved) dovecot: lmtp(3570): Disconnect from local: Successful quit Hope this helps… -- @martinkrafft | http://madduck.net/ | http://two.sentenc.es/ "the public is wonderfully tolerant. it forgives everything except genius." -- oscar wilde spamtraps: madduck.bogus(a)madduck.net

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subscribe users mailbox with non-valid mutf7 chars
by Matthias Lay 16 Mar '16

16 Mar '16

Hi all, I got a question if its possible to subscribe a mailbox from another user, who contains non mutf7 valid chars in his mailbox path. I have a private namespace which can subscribe to mailboxes of a shared namespace with public/ prefix in this example username in private namespace is johnd public username is "a & p products group" when I try the subscription I get this one: ******************************************** # doveadm mailbox subscribe -u johnd "public/a & p products group/INBOX" doveadm(johnd): Error: Can't public/a & p products group/INBOX mailbox subscribe to: Invalid mailbox name 'public/a & p products group/INBOX': Missing namespace prefix 'public/a &- p products group/' ******************************************** is there a way to work around this? (except for not to use usernames like this) greetz matze

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Question: encrypt/decrypt with plugin mail_filter
by Zhang Huangbin 16 Mar '16

16 Mar '16

Dear all, I'm trying to encrypt/decrypt mail body with Dovecot plugin 'mail_filter': http://wiki2.dovecot.org/Plugins/MailFilter I wrote a Python script to read mail body and encrypt it, the encryption/decryption part is working as expected, but Dovecot always fail to write modified email on disk: Error: Cached message size smaller than expected (1575 < 1644) Error: Maildir filename has wrong S value, renamed the file from /var/vmail/domain.com/user/cur/1458165453.M632521P17600.c7.iredmail.org,S=1575:2, to /var/vmail/domain.com/user/cur/1458165453.M632521P17600.c7.iredmail.org,S=1575:2, Error: Corrupted index cache file /var/vmail/domain.com/user/dovecot.index.cache: Broken physical size for mail UID 4 Error: read() failed: Invalid argument (uid=4) I know this behave is clearly explained in Dovecot wiki page, the question is, is there any way to overcome this and let Dovecot correctly handle the encrypted/decrypted mail? Thanks. :)

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dsync and ProxyAUTH
by Giovanni Mancuso 16 Mar '16

16 Mar '16

Hi, can i use dync to migrate a mailboxes through PROX-AUTH? Could It be an attractive feature for you? Thanks

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overview zlib efficiency?
by Götz Reinicke - IT Koordinator 16 Mar '16

16 Mar '16

Hi, may be someone has already done that: Do you have a script(?) tool which shows the efficiency of the mail compression if zlib is used? Something that shows the uncompressed size vrs. the compressed. Thanks for hints! /Götz

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Plugin "last-login" - Log SMTP-AUTH information
by Benjamin Hück 16 Mar '16

16 Mar '16

Hello all, we are using the Plugin "last-login" [1] to update user's last-login timestamp or the timestamp of the last incoming message in a MySQL backend. Would it be possible to expand the plugin to also log the timestamp of the last smtp-auth attempt/successful process? Currently in our settings, a smtp-auth request (port 587) is forwarded by postfix to a dovecot backend server for authentication. I couldn`t find out the developer of the plugin otherwise I had contact them immediatly. Thanks and best regards, Benjamin Hück [1] http://wiki2.dovecot.org/Plugins/LastLogin -- ________________________________ KEVAG Telekom GmbH Cusanusstr. 7 D 56073 Koblenz Fon: +49 261 20162-0 Fax: +49 261 20162-25100 http://www.kevag-telekom.de/ Geschäftsführer: Bernd Gowitzke, Gerd Thewalt Sitz der Gesellschaft: Koblenz, Amtsgericht Koblenz, HRB Nr. 5343 USt.IdNr. DE 18 77 67 843 St-Nr. 22/650/0182/7

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New dovecot user needs installation help
by Jason Pruim 16 Mar '16

16 Mar '16

Hey Everyone, So I just setup my first dovecot install with postfix running for the mail server… I can telnet into my dovecot install and login just fine with my user locally… But when I try to add the account from my phone, computer, or telnetting from my local computer, it just hangs and eventually kicks back a generic error saying it can’t be added… Where can I start looking? I’m hosted with amazon web services and I’m waiting on them to approve my request to white list my IP on my instance, but that should only restrict my ability to send email out on port 25… I should still be able to operate locally… According to the firewall on amazon port 143 and 993 are both allowed from any IP address into the server (All outbound traffic is currently open until I get it working) I’m thinking it’s something easy, and I can handle pointers! I don’t necessarily need my hand held the entire way… At least not yet… Here is the output of my dovecot -n: [ec2-user@ip-172-31-22-222 log]$ dovecot -n # 2.0.9: /etc/dovecot/dovecot.conf # OS: Linux 3.14.48-33.39.amzn1.x86_64 x86_64 mail_location = mbox:~/mail:INBOX=/var/mail/%u mbox_write_locks = fcntl passdb { driver = pam } ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { driver = passwd } [ec2-user@ip-172-31-22-222 log]$ Let me know if there is anything else you need, or where to go from here! Thanks in advance! Jason Pruim pruimj(a)gmail.com

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