Happy holidays! I am experiencing an issue when trying to check my mail using IMAP. with Dovecot I have tried checking my mail using a full GUI client (Thunderbird) and telnet. Both times I get disconnected before all of my messages can be downloaded and I see an error in my mail log. Here are the details:
[root@cust19-1-prod-domain userqa]# dovecot --version 2.0.9
[root@cust19-1-prod-domain userqa]# dovecot -n
2.0.9: /etc/dovecot/dovecot.conf
OS: Linux 2.6.18-164.11.1.el5 x86_64 CentOS release 5.4 (Final)
disable_plaintext_auth = no login_trusted_networks = 172.19.136.0 mail_location = maildir:~/Maildir mail_max_userip_connections = 100 mbox_write_locks = fcntl mmap_disable = yes passdb { args = scheme=plain username_format=%n /etc/dovecot/users driver = passwd-file } protocols = imap ssl = no userdb { args = username_format=%n /etc/dovecot/users driver = passwd-file } [root@cust19-1-prod-domain userqa]#
i try to check my mail:
username@ops1-1-domain:~$ telnet cust19-1-prod-domain imap Trying 172.19.136.223... Connected to cust19-1-prod-domain.domain.net (172.19.136.223). Escape character is '^]'.
- OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready.
1 LOGIN userqa mypassword 1 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in
3 EXAMINE INBOX
- FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
- OK [PERMANENTFLAGS ()] Read-only mailbox.
- 1 EXISTS
- 0 RECENT
- OK [UNSEEN 1] First unseen.
- OK [UIDVALIDITY 1356130761] UIDs valid
- OK [UIDNEXT 5] Predicted next UID
- OK [HIGHESTMODSEQ 1] Highest 3 OK [READ-ONLY] Select completed.
4 FETCH 1 BODY[]
I get some binary output and some mail headers, but then it crashes..
Not sure if you guys want to see all of the extremely verbose output, so I put it at the end of this message. The last messages that it processes is a message with an Excel spreadsheet attached to it (a .xlsx file)
i enabled core dumps:
echo 'DAEMON_COREFILE_LIMIT="unlimited"' >> /etc/sysconfig/dovecot
Now I see this in /var/log/maillog:
2012-12-25T17:53:47-08:00 cust19-1-prod-domain dovecot: master: Error: service(imap): child 11265 killed with signal 11 (core dumped)
core dumps are being written here, but they're empty:
[root@cust19-1-prod-domain userqa]# pwd /mnt/mail/userqa [root@cust19-1-prod-domain userqa]# ls -lh total 20K -rw------- 1 userqa userqa 0 Dec 25 17:52 core.11111 -rw------- 1 userqa userqa 0 Dec 25 17:53 core.11265 -rw------- 1 userqa userqa 0 Dec 25 17:58 core.11812 drwx------ 7 userqa userqa 4.0K Dec 25 17:58 Maildir [root@cust19-1-prod-domain userqa]#
What should I try now? Is it possible that Dovecot is having difficulty processing the attachment file? If I delete this user's mailbox file and send basic text e-mail to the user I can read/retrieve them just fine.. there only seems to be an issue when this message with its attachment arrives. The attachment seems small in size:
Content-Disposition: attachment; filename="report_amex.xlsx"; size=20527;
That means the attachment is 20527 bytes, correct?
Thank you for any suggestions/help you can offer!
Here's the message that it seems to be having issues with:
Return-Path: <user@company.com> Received: from mxout.mailprovider.com (slb1-prod-domain.domain.net[172.19.136.4]) by cust19-1-prod-domain.domain.net (8.13.8/8.13.8) with ESMTP id qBOM8oIE029715 for <userqa_2938@integration.company.com>; Mon, 24 Dec 2012 14:08:50 -0800 Received: from mxout.mailprovider.com (localhost [127.0.0.1]) by mxout.mailprovider.com (Postfix) with ESMTP id 017E455325B for <userqa_2938@integration.company.com>; Mon, 24 Dec 2012 17:08:51 -0500 (EST) X-Virus-Scanned: by SpamTitan at mail.lan Received: from HUB025.mail.lan (unknown [10.110.2.1]) by mxout.mailprovider.com (Postfix) with ESMTP id 63DA0553132 for <userqa_2938@integration.company.com>; Mon, 24 Dec 2012 17:08:50 -0500 (EST) Received: from MAILR001.mail.lan ([10.110.18.28]) by HUB025.mail.lan ([10.110.17.25]) with mapi; Mon, 24 Dec 2012 17:08:48 -0500 From: User Name <user@company.com> To: "userqa_2938@integration.company.com" <userqa_2938@integration.company.com> Date: Mon, 24 Dec 2012 17:08:47 -0500 Subject: Thread-Index: Ac3fx0lCAoza6rTzQTSh8g52mx84GwAC2GGwAAH1lkAAkiyekA== Message-ID: <0370E60157CA7E4097D81B9E09728A941CB269A29D@MAILR001.mail.lan> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/mixed; boundary="_004_0370E60157CA7E4097D81B9E09728A941CB269A29DMAILR001maill_" MIME-Version: 1.0
--_004_0370E60157CA7E4097D81B9E09728A941CB269A29DMAILR001maill_ Content-Type: multipart/alternative; boundary="_000_0370E60157CA7E4097D81B9E09728A941CB269A29DMAILR001maill_"
--_000_0370E60157CA7E4097D81B9E09728A941CB269A29DMAILR001maill_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
From: User Name Sent: Friday, December 21, 2012 6:23 PM To: 'userqa_2938@integration.company.com' Subject: FW:
With Best Regards, User Name
From: User Name Sent: Friday, December 21, 2012 5:27 PM To: 'userqa_2938@integration.company.com' Subject: FW:
With Best Regards, User Name
From: User Name Sent: Friday, December 21, 2012 4:05 PM To: 'userqa_2938@integration.company.com' Subject:
With Best Regards, User Name
--_000_0370E60157CA7E4097D81B9E09728A941CB269A29DMAILR001maill_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
<html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr= osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" = xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:= //www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV=3D"Content-Type" CONTENT= =3D"text/html; charset=3Dus-ascii"><meta name=3DGenerator content=3D"Micros= oft Word 12 (filtered medium)"><style><!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:11.0pt; font-family:"Calibri","sans-serif";} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} p.MsoAcetate, li.MsoAcetate, div.MsoAcetate {mso-style-priority:99; mso-style-link:"Balloon Text Char"; margin:0in; margin-bottom:.0001pt; font-size:8.0pt; font-family:"Tahoma","sans-serif";} span.BalloonTextChar {mso-style-name:"Balloon Text Char"; mso-style-priority:99; mso-style-link:"Balloon Text"; font-family:"Tahoma","sans-serif";} span.EmailStyle19 {mso-style-type:personal; font-family:"Calibri","sans-serif"; color:windowtext;} span.EmailStyle20 {mso-style-type:personal; font-family:"Calibri","sans-serif"; color:#1F497D;} span.EmailStyle21 {mso-style-type:personal; font-family:"Calibri","sans-serif"; color:#1F497D;} span.EmailStyle22 {mso-style-type:personal-reply; font-family:"Calibri","sans-serif"; color:#1F497D;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page WordSection1 {size:8.5in 11.0in; margin:1.0in 1.0in 1.0in 1.0in;} div.WordSection1 {page:WordSection1;} --></style><!--[if gte mso 9]><xml> <o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" /> </xml><![endif]--><!--[if gte mso 9]><xml> <o:shapelayout v:ext=3D"edit"> <o:idmap v:ext=3D"edit" data=3D"1" /> </o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vli= nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span style=3D'c= olor:#1F497D'><o:p> </o:p></span></p><p class=3DMsoNormal><span style= =3D'color:#1F497D'><o:p> </o:p></span></p><div><p class=3DMsoNormal><s= pan style=3D'color:#1F497D'>With Best Regards,<o:p></o:p></span></p><p clas= s=3DMsoNormal><span style=3D'color:#1F497D'>User Name<o:p></o:p></span></= p><p class=3DMsoNormal><span style=3D'color:#1F497D'>______________________= _<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'color:#1F497D'>s= kype: user<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'color= :#1F497D'>cell phone: +1 224 600 0072<o:p></o:p></span></p></div><p class= =3DMsoNormal><span style=3D'color:#1F497D'><o:p> </o:p></span></p><div=
--_000_0370E60157CA7E4097D81B9E09728A941CB269A29DMAILR001maill_--
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--_004_0370E60157CA7E4097D81B9E09728A941CB269A29DMAILR001maill_-- Connection closed by foreign host.
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Hi Eric,
On 12/25/12 9:26 PM, Eric wrote:
There have been a lot of fixes since that version; can you confirm that this problem is not in 2.0.19 (or better yet, 2.1.12?)
i enabled core dumps:
echo 'DAEMON_COREFILE_LIMIT="unlimited"' >> /etc/sysconfig/dovecot
Does that work? The point is to set "ulimit -c unlimited". I don't know what package you're using, but Dovecot doesn't ship with an init script (at least, 2.0.9 didn't.) The only thing I know of is at http://wiki.dovecot.org/DovecotInit, and that doesn't use /etc/sysconfig at all.
If you're still getting core dumps with 2.0.19, check your setting of "ulimit -c". It should be "unlimited" for this case. You may need to modify /etc/init.d/dovecot. My guess is that your /etc/sysconfig/dovecot modification is having no effect.
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Isn't the version I have (2.0.9) newer than 2.0.19? The newest RPM I could find for CentOS was dovecot-2.0.9-2, not all that much newer than what I am using. I am not opposed to upgrading, just not sure if I am seeing much in the way of RPMs for my system that I can use to upgrade to a version that is much newer than what I already have.
I had taken the " echo 'DAEMON_COREFILE_LIMIT="unlimited"' >> /etc/sysconfig/dovecot" command from the Dovecot page on enabling core dumps for Red Hat (http://www.dovecot.org/bugreport.html). I have also added unlimited core dump files to /etc/security/limits.conf and verified that whenever myself or anyone else opens a shell that "ulimit -c" shows an output of "unlimited".
I don't see any mention of limits in my Dovecot init file either. The init script came with my RPM package and I have not modified it.
Even though I have unlimited core dump files allowed, I am still getting core files that are 0 bytes in size in the mail user's home directory. Any idea why?
[root@imapserver ~]# su - dovecot -bash-3.2$ ulimit -c unlimited -bash-3.2$ id uid=97(dovecot) gid=97(dovecot) groups=97(dovecot)
[root@imapserver ~]# service dovecot restart Stopping Dovecot Imap: [ OK ] Starting Dovecot Imap: [ OK ]
$ telnet imapserver imap Trying 1.1.1.1... Connected to imapserver (1.1.1.1). Escape character is '^]'.
- OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready. 1 LOGIN imapuser imapuserpassword 1 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTOR E QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in 2 select INBOX
- FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
- OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted.
- 2 EXISTS
- 0 RECENT
- OK [UNSEEN 1] First unseen.
- OK [UIDVALIDITY 1356130761] UIDs valid
- OK [UIDNEXT 8] Predicted next UID
- OK [HIGHESTMODSEQ 1] Highest 2 OK [READ-WRITE] Select completed. 3 FETCH 1 BODY[]
- 1 FETCH (FLAGS (\Seen) BODY[] {39306}
..... some brief message output .....
Connection closed by foreign host.
And then I get an empty core file:
[root@imapserver]# pwd /mnt/mail/imapuser [root@imapserver]# ls -lh core* -rw------- 1 imapuser imapuser 0 Dec 30 00:56 core.7319
On Sat, Dec 29, 2012 at 12:18 PM, Jim Lawson <jtl+dovecot@uvm.edu> wrote:
On 12/30/12 4:15 AM, Eric wrote:
2.0.19 is newer than 2.0.9. 2.1.12 is newer than that. You may have to take the spec file and rpmbuild your own RPM, if you want to stick with RPMs.
Check disk space on the filesystem where Dovecot is trying to dump? Is there some other reason it can't write there (but can create files) ?
Jim
participants (3)
-
Eric
-
Jim Lawson
-
Reindl Harald