- dovecot - dovecot.org

[Dovecot] Some of my IMAP Folders vanished in some MUAs
by Dominik Schulz 05 Aug '07

05 Aug '07

Hi, I'm using dovecot for some time now. Previously I was using Courier and I've migrated this setup to dovecot which went pretty fine. Now I'm experiencing some strange behaviour when using some newer mail clients. Some of my Folders, like "spam", are vanished. The strange point is that it only happens in some clients, like Thunderbird 2.x+ or KMail 3.5.x. In others, like Thunderbird < 2, Mutt or my Webmailer (Horde) they still show up. These folders are still there, i.e. in the filesystem, and the permissions seem to match those of the other folders which can be seem in all MUAs. I don't know if this is even related to dovecot but I think this is where I should start looking for an solution. I'm using dovecot 1.0.rc15 from Debian (stable/etch). It'd be great if anyone was able to help me. Thanks in advance. Best Regrads Dominik Schulz

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[Dovecot] Password Encryption
by Dave Morrow 05 Aug '07

05 Aug '07

Hi all. I hope this is not a RTFM-type question, but I've been unable to find a searchable archive of this mailing list....... I recently began investigating using Dovecot/Postfix/MySQL solution. I've been following the documentation http://wiki.dovecot.org/HowTo/DovecotLDAPostfixAdminMySQL?highlight=%28m ysql%29 While everything seems to have gone right, I have been unable to successfully login to the IMAP server using Outlook Express. It seems that the problem may relate to PostfixAdmin storing passwords in the mysql database md5 encrypted, and Dovecot is not able to read them, but I am not certain. The error when a client logs in is something like dovecot: auth-worker(default): plain_md5_verify(testuser1(a)mydomain.com): Invalid password encoding David Morrow Technical Systems Lead Autodata Solutions Company David.Morrow(a)Autodata.net <mailto:David.Morrow@Autodata.net> http://www.autodatasolutions.com <http://www.autodatasolutions.com/> Tel: (519) 963-3020 Fax: (519) 451-6615 Think slowly. Act quickly. This message has originated from Autodata Solutions. The attached material is the Confidential and Proprietary Information of Autodata Solutions. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete this message and notify the Autodata system administrator at Administrator(a)autodata.net <mailto:Administrator@autodata.net <mailto:Administrator@autodata.net> >

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[Dovecot] modify header in deliver
by Reinhard Hainz 05 Aug '07

05 Aug '07

hi, is it possible to modify the mail-header (subject) within the deliver process (maybe by a lda-plugin)? I have tried to write a simple plugin for this, but I cannot find a way to modify the mail befor writing it to the mailbox. Reinhard ------------------------------------------- Versendet durch aonWebmail (webmail.aon.at) Hier spielt die Musik! Über zwei Millionen Songs zum Downloaden. http://www.aon.at/musikdownload

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[Dovecot] IMAP-Proxy and LDAP?
by Patrick Ben Koetter 05 Aug '07

05 Aug '07

I am doing some research on Dovecots IMAP-Proxy features mentioned in <http://wiki.dovecot.org/HowTo/ImapProxy> and <http://wiki.dovecot.org/PasswordDatabase/ExtraFields/Proxy>. The docs only mention SQL as backend to hold required data. Is it also possible to use LDAP? TIA, p@rick -- state of mind Agentur für Kommunikation, Design und Softwareentwicklung Patrick Koetter Tel: 089 45227227 Echinger Strasse 3 Fax: 089 45227226 85386 Eching Web: http://www.state-of-mind.de Amtsgericht München Partnerschaftsregister PR 563

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[Dovecot] sendfile on Solaris 10 SPARC?
by Tan Shao Yi 04 Aug '07

04 Aug '07

Hi, I am using dovecot-1.0.2 and am observing occassions where the imap process for the user goes into an infinite loop. A truss of the process gives: pollsys(0x000B0308, 4, 0xFFBFF898, 0x00000000) = 1 fstat64(10, 0x000BC130) = 0 sendfilev64(1, 1, 0xFFBFF4B0, 1, 0xFFBFF4A4) Err#11 EAGAIN pollsys(0x000B0308, 4, 0xFFBFF898, 0x00000000) = 1 fstat64(10, 0x000BC130) = 0 sendfilev64(1, 1, 0xFFBFF4B0, 1, 0xFFBFF4A4) Err#11 EAGAIN pollsys(0x000B0308, 4, 0xFFBFF898, 0x00000000) = 1 fstat64(10, 0x000BC130) = 0 (... repeatedly ...) When I searched the maillog for the user, the last actions taken were: dovecot: Aug 04 10:50:42 Info: imap-login: Login: user=<XXX>, method=PLAI N, rip=203.120.90.32, lip=203.120.90.85 dovecot: Aug 04 10:50:42 Info: IMAP(XXX): copy -> Trash: uid=25, msgid=<d 05001c7d51a$0a18c550$958f3011@burgaldceo> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): copy -> Trash: uid=26, msgid=<4 14901c7d5bd$55a80b40$26227a4d@Mitchell> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): copy -> Trash: uid=27, msgid=<9 31601908.49031521463794(a)lanecompany.com> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): deleted: uid=25, msgid=<d05001c 7d51a$0a18c550$958f3011@burgaldceo> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): deleted: uid=26, msgid=<414901c 7d5bd$55a80b40$26227a4d@Mitchell> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): deleted: uid=27, msgid=<9316019 08.49031521463794(a)lanecompany.com> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): expunged: uid=25, msgid=<d05001 c7d51a$0a18c550$958f3011@burgaldceo> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): expunged: uid=26, msgid=<414901 c7d5bd$55a80b40$26227a4d@Mitchell> dovecot: Aug 04 10:50:42 Info: IMAP(XXX): expunged: uid=27, msgid=<931601 908.49031521463794(a)lanecompany.com> dovecot: Aug 04 10:50:43 Info: IMAP(XXX): Disconnected: Logged out May I know what could have caused the problem or is there any other information I can provide? Thanking in advance. Cheers, Tan Shao Yi

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Re: [Dovecot] Dovecot strong or not for a big Webmail architecture
by Bill Boebel 04 Aug '07

04 Aug '07

On Thu, August 2, 2007 3:06 pm, John fistack <john.fistack(a)yahoo.fr> said: > I know webmail.us use Dovecot, what is the most big dovecot architecture known ? > Do you think Dovecot can handle 1 million of active users in a good architecture ? Yep... and we have 500K very active users on it. We've scaled Dovecot horizontally without NFS, just lots of independent Dovecot server intances with smart proxy/mail-routing infrastructure around it. It can easily scale to millions of users this way. Just make sure you throw enough disks at it and you'll be fine, with or without NFS. > Do you think it's a good solution to use one synchronised local Openldap on each > server Dovecot ? No. I'd replicate your ldap database on a few servers that are dedicated to that purpose, and on each mail server use Dovecot's auth_cach feature to minimize how often it needs to query ldap. > Do you think It's possible to use Postgresql or MySQL instead of Openldap ? We use MySQL. MySQL handles frequent writes better than OpenLDAP from our experience. It is also simpler for us to do replication and troubleshooting because we employ several MysQL gurus already. > Are cyrus or courrier-imap better solutions ? Definitely not courier-imap, because of it's lack of indexes. Not sure about Cyrus. > Someone say "Zimbra is highly scalable and fast", I think Zimbra could be to heavy > in this architecture, is Dovecot scalable ? My opinion is Zimbra is too heavy beccause of the way mail is stored on the backend. Dovecot with maildir scales out well, and the promise of dbox mail storage format appears that it will make it even more scalable down the road. Bill

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[Dovecot] MD5 mis-match
by Big Pizzle 03 Aug '07

03 Aug '07

Hi all, I'm almost finished building our new load balanced email server that are attached to an NFS mountpoint. There are currently two e-mail servers connected to the NFS share. Both email servers are running CentOS 4.5 with Postfix 2.4.3, Dovecot 0.99, and authenticating via LDAP. Dovecot is using Maildir format. I've been trying to do some benchmarks using Postal and Rabid, and whenever I run rabid, I'm getting errors like this: MD5 mis-match, calculated:a628289996ce19910ebbd4eef2ebc3fc, expected 9406a7cf56afb5a1308eb5377e141719! However, when I tail the /var/log/maillog, I don't see errors - I just see the pop3-login. Just wondering if that is okay. I've also been trying to find an RPM for Dovecot 1.0.3, with no avail. Anyone know where I can get one? Thanks in advance. Patrick

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Re: [Dovecot] Missing MIME-Version header in e-mails.
by Bill Boebel 03 Aug '07

03 Aug '07

On Wed, August 1, 2007 9:51 am, Timo Sirainen <tss(a)iki.fi> said: > On Wed, 2007-08-01 at 19:50 +0800, Tan Shao Yi wrote: >> Hi, >> >> I notice that in src/lib-mail/message-parser.c, there is a section of >> code that checks for the presence of MIME-Version before allowing >> processing of the Content-* headers. >> >> Is there a possibility of relaxing this rule? There are some broken >> mailers, in particular newsletter mailers that do not seem to honour the >> MIME-Version header, though they do send the Content-Type. > > I suppose this could be changed. At least UW-IMAP also does that.. Or at least make relaxing it an option in v1.1. I personally think it should be relaxed. Bill

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[Dovecot] Looking for RPM for 1.0.3 for CentOS with imap, ldap, and ssl
by Big Pizzle 03 Aug '07

03 Aug '07

Hi, I don't know how to compile Dovecot from src rpm;s - in fact I tried and failed miserably. The only other src rpm I have ever built was postfix, and I ran into a whole bunch of errors trying to build an rpm from the src rpm at ATRpm. Anywho, I was wondering if one of you wonderful Dovecot members would be willing to create an RPM for CentOS 4.5 that includes ldap and ssl. Or, if someone knows of a URL I can go to and follow a Dovecot-related src rpm build tutorial, that would be of great help too. Heck - I'll even settle for a 1.0.2. Since Dovecot doesn't support 0.99 I want to make sure I have the most recent package. Thanks in advance. Patrick

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[Dovecot] Dovecot strong or not for a big Webmail architecture
by John fistack 03 Aug '07

03 Aug '07

Hello, Do you think Dovecot could handle millions of active users in a big architecture ? This cluster could be for example (each server is a bi quad Xeon 2.66 Ghz) : - 40 Dovecot servers - 4 LVS - 20 Apache+PHP - 2 Openldap - 20 Postfix + ClamAV + SpamAssassin - 1 NFS Netapps For millions of user it could be multiple different clusters of 40 Dovecot servers with 1 Netapp for each cluster. I want to work in NFS. I've experimented problem with Cyrus and NFS on Netapp. I want to use maildir, I can manage limitations of inodes with Netapp. I know webmail.us use Dovecot, what is the most big dovecot architecture known ? Do you think Dovecot can handle 1 million of active users in a good architecture ? Do you think it's a good solution to use one synchronised local Openldap on each server Dovecot ? Do you think It's possible to use Postgresql or MySQL instead of Openldap ? Are cyrus or courrier-imap better solutions ? Someone say "Zimbra is highly scalable and fast", I think Zimbra could be to heavy in this architecture, is Dovecot scalable ? Thank you for your ideas. Regards. John Fistack _____________________________________________________________________________ Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail

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