- dovecot - dovecot.org

[Dovecot] Filesystem full/quota limitations and Dovecot
by Tony Kay 25 Mar '06

25 Mar '06

How does Dovecot handle accounts when writes are denied, such as in situations when a user is over quota, or the filesystem is full? -- Anthony Kay University Computing Center (541) 346-1719 GPG Fingerprint: B0DB D46A 60AF FAE7 A94A 5075 0CB4 4D88 9F4F 7F09 Only a statue can be perfect, and even then it casts a shadow. - Merle Fossum

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[Dovecot] Corrupted transaction log file dovecot.index.log: unexpected end of file while reading header
by Matthias Saou 25 Mar '06

25 Mar '06

Hi, I'm using dovecot 1.0.0beta3 on a RHEL4 x86_64 server. I'm seeing this error each and every time a user checks his emails : Mar 15 18:19:34 s1 dovecot: pop3-login: Login: user=<user@domain>, method=PLAIN, rip=::ffff:195.x.x.x, lip=::ffff:195.x.x.x Mar 15 18:19:34s1 dovecot: pop3(user@domain): Corrupted transaction log file /home/vmail/domain/user/dovecot.index.log: unexpected end of file while reading header Mar 15 18:19:34 s1 dovecot: pop3(user@domain): Logout. top=0/0, retr=0/ del=0/2, size=1213 From my basic testing, this seemed harmless. But after putting this in production, it appears that when emails are retrieved, long ones always get truncated after a few kB, changing attachments into garbage :-( Has anyone seen this problem before? Any ideas what could be causing this? Matthias -- Clean custom Red Hat Linux rpm packages : http://freshrpms.net/ Fedora Core release 4 (Rawhide) - Linux kernel 2.6.15-1.2054_FC5 Load : 0.22 0.36 0.41

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[Dovecot] Segfault when parsing configuration on x86_64
by Matthias Saou 25 Mar '06

25 Mar '06

Hi, Using the exact same build of 1.0.beta3, one i386 and the other x86_64, I get segfaults upon startup with the x86_64 version when using the exact same dovecot.conf file. Here is the error : # dovecot -F Unexpected eof found when reading file 'UNOPENED' (Errcode: 0) Segmentation fault (core dumped) And the backtrace (I don't have symbols for all libs, sorry) : (gdb) bt #0 i_stream_next_line (stream=0x52c3a8) at istream.c:182 #1 0x000000000040e345 in i_stream_read_next_line (stream=0x52c3a8) at istream.c:201 #2 0x000000000040aaa9 in settings_read (path=0x41798e "/etc/dovecot.conf", section=0x0, callback=0x409580 <parse_setting>, sect_callback=0x409a50 <parse_section>, context=0x7fbffff880) at settings.c:222 #3 0x000000000040a0e1 in master_settings_read ( path=0x41798e "/etc/dovecot.conf", nochecks=false) at master-settings.c:1159 #4 0x000000000040875a in main (argc=2, argv=0x7fbffffa18) at main.c:762 #5 0x0000003d4341c4bb in __libc_start_main () from /lib64/tls/libc.so.6 #6 0x000000000040357a in _start () #7 0x0000007fbffffa08 in ?? () #8 0x000000000000001c in ?? () #9 0x0000000000000002 in ?? () #10 0x0000007fbffffbf2 in ?? () #11 0x0000007fbffffbfa in ?? () #12 0x0000000000000000 in ?? () The really weird part is that I've managed to get my dovecot.conf in a state where the problem no longer happens, but simply adding a line with '#', or removing trailing spaces (normally harmless) on some config lines makes the error re-appear. My quick guess would be that something is wrong with the config file parser on 64bit archs... Actually, I've just made some more tests, and it is "partially" reproducible on i386. In this part of my configuration : auth default { mechanisms = plain passdb sql { args = /etc/dovecot-mysql.conf } userdb sql { args = /etc/dovecot-mysql.conf } } There is a trailing space on both "args = ..." lines. Well, if I remove them, I get this message with the i386 build. When I put them back, all is fine again. Mar 16 11:05:37 s1 dovecot: pop3(user@domain): Unexpected eof found when reading file 'UNOPENED' (Errcode: 0) (from /var/log/maillog, dovecot starts fine) Matthias -- Clean custom Red Hat Linux rpm packages : http://freshrpms.net/ Fedora Core release 4 (Rawhide) - Linux kernel 2.6.15-1.2054_FC5 Load : 0.78 0.61 0.49

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[Dovecot] /etc/passwd authentication: ERR authentication failed
by Quoc Huy Trinh 25 Mar '06

25 Mar '06

Hi all, I am a newbie with dovecot. I have a problem with it's authentication. -I installed dovecot 1.0 beta3 at /usr/local/dovecot. -I want to use my linux system accounts with mail (authentication using /etc/passwd). -I have a user account: huytq with password: 123456 -dovecot is started ok. I used telnet to login: +OK Welcome LENSECAP HCM mail user huytq +OK pass 123456 -ERR Authentication failed. and this is the infolog file says: dovecot: Mar 18 22:26:50 Info: auth(default): client in: AUTH 1 PLAIN service=POP3 lip=192.168.1.254 rip=192.168.1.253 resp=<hidden> dovecot: Mar 18 22:26:50 Info: auth(default): passwd(huytq, 192.168.1.253): password mismatch dovecot: Mar 18 22:26:51 Info: auth(default): client out: FAIL 1 user=huytq dovecot: Mar 18 22:27:50 Info: pop3-login: Disconnected: Inactivity: user=<huytq>, method=PLAIN, rip=192.168.1.253, lip=192.168.1.254 This is my conf file: ###################### dovecot.conf ################################# base_dir = /opt/dovecot/ protocols = pop3 listen = 192.168.1.254 ssl_disable = yes log_path = /usr/local/dovecot/log/log info_log_path = /usr/local/dovecot/log/infolog log_timestamp = "%b %d %H:%M:%S " disable_plaintext_auth = no auth_debug = yes auth_verbose = yes auth default { mechanisms = plain passdb passwd { } userdb passwd { } user = root } login_dir = /opt/dovecot/login login_chroot = yes login_user = dovecot login_greeting = Welcome QuocHuy mail server login_log_format_elements = user=<%u> homedir=%h method=%m rip=%r lip=%l %c login_log_format = %$: %s default_mail_env = maildir:/opt/mail_data/%u/Maildir mail_debug = yes protocol pop3 { login_executable = /usr/local/dovecot/libexec/dovecot/pop3-login mail_executable = /usr/local/dovecot/libexec/dovecot/pop3 pop3_uidl_format = %v.%u } ######################################################### Any opinion? Thanks in advance. -- Quoc Huy Trinh

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[Dovecot] namespaces in 1.0beta3
by Mark Nelson 25 Mar '06

25 Mar '06

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello I'm currently running dovecot-1.0.alpha4-1 on my production system, dovecot-1.0.alpha4-1where I am making use of namespaces. I have downloaded 1.0-beta3 and have installed it on a test system. I have customised the configuration for local use, however when I inserted the namespace settings into my configuration file dovecot refuses to start claiming that there is a problem with the configuration file. Has the format of the namespace configuration changed? (Configuration fragment shown below) Mark. # Migration name spaces # # # default namespace namespace private { separator = / prefix = inbox = yes } # for backwards compatibility: namespace private { separator = / prefix = hidden = yes } namespace private { separator = / prefix = mail/ hidden = yes } namespace private { separator = / prefix = ~/mail/ hidden = yes } namespace private { separator = / prefix = ~%u/mail/ hidden = yes } - -- - ------------------------------------------------------------- Mark Nelson - Mark.Nelson(a)durham.ac.ukdovecot-1.0.alpha4-1 IPPP, Department of Physics, University of Durham, Science Laboratories, South Road, Durham, DH1 3LE Office: +44 (0)191 334 3811, Direct Dial: +44 (0)191 334 3653 PGP Key: http://www.ippp.dur.ac.uk/~mn/pgp_key.txt This mail is for the addressee only -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) Comment: Using GnuPG with Red Hat - http://enigmail.mozdev.org iD8DBQFEInzflzM++u0MgcERAmQeAJ9QvkUGcZkL7Spyh1dDt69m/CWXUACcCiq4 re7cEracjrZTyEGJ7qRyos0= =HLtc -----END PGP SIGNATURE-----

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[Dovecot] Per-user "Seen" flags with shared namespace stored as maildir?
by Mark Lidstone 25 Mar '06

25 Mar '06

Hi all, I was wondering if the above was possible. I know that the "seen" flag is stored in the filename, but was wondering if anyone knew of a way to separate it out? I know this would strictly-speaking break maildir compatibility, but it would be extremely useful for shared folders. I've been given the task of replacing the (extremely heavily used) shared folders functionality of our Exchange server and have almost everything working. I have authentication working against AD, shared folders, per-user subscriptions, "mail enabled folder" functionality and seem to have sorted all the other permissions issues I've been having. Apart from a nice easy-to-use front end for changing folder permissions this is the last thing I can think of that I need to look into before I can show this to my boss. Any help would be greatly appreciated, Mark Lidstone IT Administrator BMT Nigel Gee & Associates Ltd Floors 1-3, Building 14, Shamrock Quay, William Street, Southampton SO14 5QL UK Tel: 023 8022 6655 Fax: 023 8022 8855 Visit Our Website: <http://www.ngal.co.uk> CONFIDENTIAL The information contained in this e-mail and any attachment is confidential. It is intended only for the named addressee(s). If you are not the named addressee please notify the sender immediately and do not disclose, copy or distribute the contents to any other person other than the intended addressee(s). VIRUSES The contents of an attachment to this e-mail may contain software viruses which could damage your own computer system. While BMT Nigel Gee and Associates Ltd has taken every reasonable precaution to minimise this risk, we cannot accept liability for any damage which you sustain as a result of software viruses. You should carry out your own virus checks before opening the attachment.

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[Dovecot] dovecot(last day cvs version) lost mail
by John Wong 25 Mar '06

25 Mar '06

i find a problem, after upgrade dovecot to last day cvs version, each folder only can see the first one arrived new mail, other new mail is lost i see this message in mail log: -------------------------------------------------------- Fixed index file mail/username/.foldername/dovecot.index: first_recent_uid_lowwater 146 -> 145 Corrupted index file mail/username/.foldername/dovecot.index: Duplicate header extension keywords -------------------------------------------------------- openbsd/i386, postfix-2.3x, dovecot(last day cvs version)

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[Dovecot] Authentication without password
by Feraudet Cyril 25 Mar '06

25 Mar '06

Hi all, for one of my developpements, I need to be able to connect an IMAP server with a login but without password. (I use dovecot 1.0.beta3) For the userdb, I use "userdb static" : userdb static { args = uid=114 gid=114 home=/mydev/mail/%u } But I don't know how to allow IMAP connection by my application without password. I won't connect to a database, having a user/password file or something like this ... I think to use "passdb checkpassword" to call a fake authentication script .... Anyone have a better idea ? Thanks, Cyril Feraudet

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[Dovecot] How Can I Add New Flags
by Sezai KARATOZ 25 Mar '06

25 Mar '06

Hi all, I am new in Dovecot. I wanna use Dovecot in the big mail system about 4 million active or passive users. We use recently Courier Imap, but search mails process is so slowly. I tried Dovecot that it is better then Courier so much. But I have a problem with integration Dovecot to my system. I am using some extra flags in mails to mark them from others. For example I use a private flag "M" to understand it that this mail come from us as newsletter. I make some changes in code, but unfortunately I could'nt add this flag to Dovecot correctly. Please help me it that how can add this flag. I use maildir type Thanks, Sezai

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[Dovecot] Shared namespaces
by Mark Lidstone 25 Mar '06

25 Mar '06

Hi all, I'm trying to replace the "Public Folders" functionality in Exchange server. At first I thought it'd be something easily do-able with an IMAP server so I immediately thought of Dovecot. I setup what I though would work and things started to go a little screwy with subscription settings and the like. I started off by making a public maildir folder (in /home/public/Maildir) and setting the namespaces up in /usr/local/etc/dovecot.conf like this: namespace private { separator = / prefix = INBOX/ location = maildir:%h/Maildir inbox = yes } namespace public { separator = / prefix = Public/ location = maildir:/home/public/Maildir inbox = no hidden = no } The folder /home/public/Maildir has owner root:users and mode 770, and the file dovecot-shared in there has the same owner and mode 660. I logged with Thunderbird as user 1 and everything seems to work fine. However, when I logged in as user 2 I was getting all kinds of errors. On checking the permissions of /home/public/Maildir/subscriptions it was user1:user1 with mode 600. So then I thought "well, I'll change it to user1:users 660 and then everyone should be able to change it". I was very wrong. Whenever someone changed it, the ownership changed to userx:userx 600. Even when I tried setting the ownership to root:users and mode to 640, anyone could change it and set it to their own name (thus preventing anyone else from using it). To be perfectly honest, I'd ideally like to give people separate subscription settings anyway. I thought about symlinking the folders in, but that makes it a manual process to add new folders to everyone's maildirs. Can anyone please give me any pointers? Many thanks, Mark Lidstone IT Administrator BMT Nigel Gee & Associates Ltd Floors 1-3, Building 14, Shamrock Quay, William Street, Southampton SO14 5QL UK Tel: 023 8022 6655 Fax: 023 8022 8855 Visit Our Website: <http://www.ngal.co.uk> CONFIDENTIAL The information contained in this e-mail and any attachment is confidential. It is intended only for the named addressee(s). If you are not the named addressee please notify the sender immediately and do not disclose, copy or distribute the contents to any other person other than the intended addressee(s). VIRUSES The contents of an attachment to this e-mail may contain software viruses which could damage your own computer system. While BMT Nigel Gee and Associates Ltd has taken every reasonable precaution to minimise this risk, we cannot accept liability for any damage which you sustain as a result of software viruses. You should carry out your own virus checks before opening the attachment.

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