- dovecot - dovecot.org

[Dovecot] Can't got mail by OUTLOOK for a half million mails account
by Dong Ding 02 Sep '11

02 Sep '11

Hi, I used postfix always_bcc to backup mail. And up to now the backup account has half million mails in cur/, when I first time tried to receive the mail by outlook, it failed , no responds. Does any one has some good idea to deal with this problem? Thanks

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[Dovecot] Kerberos GSSAPI - proper item name in keytab
by Stanislav Klinkov 02 Sep '11

02 Sep '11

Hello, ALL. I am trying to organize a transparent single sign-on concept for my Active Directory users into Dovecot via IMAP. On the user's desktop I use Thunderbird 6.0 as a mail client (MUA), Windows XP as an operating system. Domain is controlled by Windows 2008 Server SP2 with Active Directory. I have installed on my Mail server Debian GNU/Linux 6.0.2 (Squeeze) and Dovecot 2.0.13 from official "wheezy" repositories of it with all dependencies. I ran into in a problem with generating proper "/etc/krb5.keytab" file for successful kerberos authentication against AD controller. I has performed all the steps described in official dovecot wiki here: http://wiki2.dovecot.org/Authentication/Kerberos I have generated a service ticket with name "imap/efim.test.local(a)MYORG.LAN" exactly as described in wiki. ("MYORG.LAN" is my kerberos realm.) But this does not work. I see in debug logs something like this: ******** main service logs ******** Aug 29 16:05:14 auth: Info: gssapi(?,192.168.4.12): While processing incoming data: Unspecified GSS failure. Minor code may provide more information Aug 29 16:05:14 auth: Info: gssapi(?,192.168.4.12): While processing incoming data: Wrong principal in request ************************************* ******** auth debug logs ********* Aug 29 16:05:14 auth: Debug: gssapi(?,192.168.4.12): Obtaining credentials for imap(a)efim.test.local Aug 29 16:05:14 auth: Debug: client out: CONT 1 Aug 29 16:05:14 auth: Debug: client in: CONT<hidden> Aug 29 16:05:16 auth: Debug: client out: FAIL 1 ************************************* But (!). If I define << auth_gssapi_hostname = "$ALL" >> instead of << auth_gssapi_hostname = efim.test.local >> then everything works fine. I decided to find out where is the problem, so I dig into source code of gssapi module, "mech-gssapi.c". For versions 2.0.13 and 2.0.14 of dovecot I see there the following: ********* mech-gssapi.c ********* static OM_uint32 obtain_service_credentials(struct auth_request *request, gss_cred_id_t *ret_r) /* blah-blah-blah */ principal_name = t_str_new(128); str_append(principal_name, service_name); str_append_c(principal_name, '@'); str_append(principal_name, request->set->gssapi_hostname); auth_request_log_debug(request, "gssapi", "Obtaining credentials for %s", str_c(principal_name)); inbuf.length = str_len(principal_name); inbuf.value = str_c_modifiable(principal_name); major_status = gss_import_name(&minor_status, &inbuf, GSS_C_NT_HOSTBASED_SERVICE, &gss_principal); ********************************* So, according to source code, Dovecot tries to find in krb5.keytab a principal named "imap@hostname". However wiki says to create the principal named "imap/hostname@REALM". Please, clarify where is the error: in source code, in wiki, or I have misunderstood something. Respectfully, Stanislav Klinkov.

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[Dovecot] OT - small hd recommendation
by Daniel L. Miller 02 Sep '11

02 Sep '11

A little OT - but I've seen a few opinions voiced here by various admins and I'd like to benefit. Currently running a single combined server for multiple operations - fileserver, mailserver, webserver, virtual server, and whatever else pops up. Current incarnation of the machine, after the last rebuild, is an AMD Opteron 4180 with a Supermicro MB using ATI SB700 chipset - which means it supports SATA 3.0. Current storage is one o/s drive, and a 4-drive RAID10 array. The RAID10 is using the Linux softraid via mdadm. The drives are Seagates - ST3160811AS. So it's 320GB of storage, and SATA 1.5. I'm seeing some warnings & errors in my logs & dmesg - and Google tells me this can the result of several factors, including the hard drives. I haven't seen any SMART warnings as yet - but I am getting a little nervous and thinking about upgrading the storage. At this time, I'm just interested in recommendations for hard drives & partitioning strategy. At the time I created the RAID10 array - I was still in the early stages of learning these technologies (not that I know that much more now!) so I probably didn't take advantage of any of the advanced settings such as stripe size, cluster size, etc. I am using XFS. As part of the potential upgrade, I'm considering changing to RAID6 - seems a bit more efficient use of space. I see no reason for SSD - I think a set of reasonable 7200rpm drives should be just fine. What I don't know is, compared to my current 4 drive RAID10 with SATA 1.5, would even a single SATA 3 drive be comparable in terms of seek performance? Should I stick with the RAID-10? -- Daniel

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[Dovecot] thunderbird and subscriptions with sieve
by Kristen J. Webb 02 Sep '11

02 Sep '11

Hi All, I'm a newbie trying to move mail out of my ISP onto a ubuntu (lucid) dovecot 1.2.9 server. Is there any way to automatically add folders created by sieve (GNU Mailutils 2.1) to the subscriptions file for a user? I'm currently testing spam, and if sieve created the folder with the first message, the thunderbird user does not see the new folder. Even more interesting, if the user then tries to create the Spam directory it thunderbird seems to quietly ignore the request and the user still cannot see the folder, but I digress... I can manually subscribe with thunderbird, but this won't scale for more complex sieve later by making the user responsible for finding everything. I can turn off subscription view in advanced settings on thunderbird, but we are trying to wean ourselves of of individual mail clients and I don't want to have to test this everywhere. Many thanks in advance! Kris -- Mr. Kristen J. Webb Teradactyl LLC. PHONE: 1-505-242-1091 EMAIL: kwebb(a)teradactyl.com VISIT: http://www.teradactyl.com Home of the True incremental Backup System

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[Dovecot] dovecot imap permission denied
by Daminto Lie 02 Sep '11

02 Sep '11

Hi, I received the following error from mail.log Aug 31 13:50:57 server1 dovecot: IMAP(mike_lee): mkdir(/home/mike_lee/Maildir/.INBOX.Sent/cur) failed: Permission denied (euid=1004 egid=1003(companyusergroup) missing +w perm: /home) What I have tried to do is changing the permission for /home by typing "sudo chmod 755 /home" and this does not work. What does it mean by missing +w perm: /home? and wonder how to get around it? This is what I have in main.cf from Postfix myhostname = server1 myorigin = /etc/mailname relayhost = mynetworks = 127.0.0.0/8, 192.168.1.0/24 inet_interfaces = all inet_protocols = ipv4 home_mailbox = Maildir/ smtpd_sasl_type = dovecot #smtpd_sasl_path = private/auth-client smtpd_sasl_path = private/auth smtpd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination #smtpd_sender_login_maps = ldap:/etc/postfix/ldap_senders.cf broken_sasl_auth_clients = yes #dovecot_destination_recipient_limit = 1 debug_peer_list = 127.0.0.1 debug_peer_level = 5 Any help is very much appreciated. Thank you

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[Dovecot] sieve vacation problem (discarding)
by Lampa 02 Sep '11

02 Sep '11

Hello, i'm using 1.2.15 version on debian. I'm getting "discarding vacation response for message implicitly delivered to <user(a)domain.com>" I have domain domain.com which has alias do-main.com. When sending email to main domain (domain.com) seems to be ok, but for aliased domain getting discard ;( I tried "scary things" from http://www.dovecot.org/list/dovecot/2009-August/042360.html require ["vacation", "variables", "envelope"]; if envelope :matches "to" "*" { set "envto" "${1}"; vacation :days 1 :addresses ["${envto}"] :subject "Out of order..." "Body message"; } Is implemented :addresses ["*"] in later 1.2 version ? Where is problem? What i must to do to get this thing working ? Upgrading to version 2.x isn't solution for me now. Thank you for advices and help. -- Lampa

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Re: [Dovecot] Password query returned multiple matches
by Arne K. Haaje 01 Sep '11

01 Sep '11

Wednesday 31. August 2011 11.44.03 skrev Simon Brereton : > > -----Original Message----- > > From: Timo Sirainen [mailto:tss@iki.fi] > > > > On 31.8.2011, at 18.19, Simon Brereton wrote: > > > Aug 30 22:41:45 mail dovecot: auth-worker(default): > > sql(sbrereton(a)domain.co.uk,64.88.168.84): Password query returned > > multiple matches > > .. > > > > > password_query = SELECT EmailAdd AS user, Password AS password, > > > > concat('/var/spool/mail/virtual/',MailDirLoc) as userdb_home, 999 as > > userdb_uid, 115 as userdb_gid FROM MailAccounts WHERE Username='%u' > > AND active = '1'; > > > > > Since the EmailAdd is unique I don't see how it can return multiple > > > > matches. > > > > You're querying with Username, not with EmailAdd, and apparently > > there are multiple rows where Username='sbrereton(a)domain.co.uk'. > > Well, what do you know - there are two Usernames that at the same! I have > no idea how that happened. You could change or add the index for Username column to UNIQUE. That will ensure it does not happen again :) Arne -- Arne K. Haaje - Dr Linux http://www.drlinux.no/ ::: arne(a)drlinux.no LinkedIn: http://no.linkedin.com/pub/arne-haaje/27/189/bb

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[Dovecot] Segmentation fault in dovecot director lmtp service
by Reinhard Vicinus 01 Sep '11

01 Sep '11

Hi, the lmtp service of our dovecot director installation quits with a segmentation fault if a lot of mails are simultaneously delivered. For example if the postfix mailqueue is filled (for whatever reason) and postqueue -f is run the lmtp service quits with a segmentation fault: Program terminated with signal 11, Segmentation fault. #0 o_stream_cork (stream=0x0) at ostream.c:75 75 if (unlikely(stream->closed)) (gdb) backtrace #0 o_stream_cork (stream=0x0) at ostream.c:75 #1 0x00007fa6e6af45d9 in lmtp_client_send_more (client=0x2435870) at lmtp-client.c:596 #2 0x0000000002434170 in ?? () #3 0x00000000004070d9 in proxy_send_more (proxy=0x2435870) at lmtp-proxy.c:390 #4 lmtp_proxy_data_input (proxy=0x2435870) at lmtp-proxy.c:444 #5 0x00007fa6e6af456f in lmtp_client_send_data (client=0x24347a0) at lmtp-client.c:306 #6 0x0000000002434f98 in ?? () #7 0xffffffffe6af73c5 in ?? () #8 0x0000000002434840 in ?? () #9 0x0000000000000000 in ?? () I don't have any ideas why the stream is 0. The configuration of the dovecot director installation is attached. Please let me know if i shall provide any more information or test something. Kind regards Reinhard

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[Dovecot] Crash in director/lmtp-proxy (lmtp_proxy_output_timeout)
by Jan-Frode Myklebust 01 Sep '11

01 Sep '11

FYI, we saw one panic on our director/lmtp-proxy yesterday. It's running dovecot v2.0.13, so it very well might have been fixed already.., but here it is anyway: Aug 31 11:33:31 loadbalancer1 dovecot:: lmtp(4119): Panic: file lmtp-proxy.c: line 370 (lmtp_proxy_output_timeout): assertion failed: (proxy->data_input->eof) Aug 31 11:33:31 loadbalancer1 dovecot:: lmtp(4119): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0 [0x3aabc3bb70] -> /usr/lib64/dovecot/libdovecot.so.0 [0x3aabc3bbc6] -> /usr/lib64/dovecot/libdovecot.so.0 [0x3aabc3b083] -> dovecot/lmtp [0x406c90] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handle_timeouts+0xcd) [0x3aabc46a8d] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x68) [0x3aabc47a48] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x2d) [0x3aabc466fd] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x3aabc34fe3] -> dovecot/lmtp(main+0x144) [0x404034] -> /lib64/libc.so.6(__libc_start_main+0xf4) [0x32ae81d994] -> dovecot/lmtp [0x403e39] Aug 31 11:33:31 loadbalancer1 dovecot:: master: Error: service(lmtp): child 4119 killed with signal 6 (core dumps disabled) On postfix side at the same time, we saw a few different messages about: postfix/lmtp[5178]:: 849FD1C024: lost connection with loadbalancers.example.com[192.168.42.15] while sending end of data -- message may be sent more than once so I suspect this crash took down all active lmtp-proxyed connections. -jf

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[Dovecot] lmtp bouncing -- Invalid parameters (in reply to MAIL FROM command)
by Jan-Frode Myklebust 01 Sep '11

01 Sep '11

I just configured postfix' virtual_transport to point at my dovecot director, but am seeing occational problems like this: Aug 31 11:50:06 smtpgw postfix/lmtp[5339]: 69E2F5410D: to=<email(a)example.net>, relay=loadbalancers.example.net[192.168.42.17]:24, delay=0.15, delays=0.14/0.01/0/0, dsn=5.5.4, status=bounced (host loadbalancers.example.net[192.168.42.17] said: 501 5.5.4 Invalid parameters (in reply to MAIL FROM command)) but can't find anything interesting in the dovecot logs.. Anybody have ideas for how to make postfix play nice with dovecot's lmtp ? smtpgws% rpm -q postfix postfix-2.3.3-2.1.el5_2 loadbalancers% rpm -q dovecot dovecot-2.0.13-2 backendmailstorers% rpm -q dovecot dovecot-2.0.13-2 -jf

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