Page 1 of 2 12 LastLast
Results 1 to 10 of 14

Thread: LMTP server closing connection - system non-responsive

  1. #1
    karol@uri.edu is offline Trained Alumni
    Join Date
    Nov 2010
    Posts
    2
    Rep Power
    4

    Default LMTP server closing connection - system non-responsive

    We are running zcs-NETWORK-7.1.1_GA_3196.RHEL5_64.20110527001604 with patch zcs-patch-7.1.1_GA_3222 applied. We have implemented a multi-server environment (one mail-store server, one LDAP server) and upgraded from version 6.0.12 two weeks ago. We have approx. 2800 users. We have experienced two alarming events. One manifested itself by our mail store not accepting any mail although you were able to log in using an IMAP client (happened during a "slower" time of day) and the other the mail store was accepting mail albeit very slowly and the Zimbra web interface was non-responsive ("busier" time of day). Each time, in the zimbra.log, the following message occurred over and over again responding to different pieces of mail:

    Aug 16 09:50:01 norm postfix/error[27328]: 0829D1EA8B5: to=<abc@mail.uri.edu>,
    relay=none, delay=0.09, delays=0.05/0/0/0.04, dsn=4.0.0, status=deferred (deliv
    ery temporarily suspended: host charlie.uri.edu[131.128.1.96] refused to talk to
    me: 421 charlie.uri.edu Zimbra LMTP server closing connection; service busy)

    Our LMTP threads hit the upper limit each time and did not come back down until I restarted zmmailboxdctl.

  2. #2
    LMStone's Avatar
    LMStone is offline Moderator
    Join Date
    Sep 2006
    Location
    477 Congress Street | Portland, ME 04101
    Posts
    1,367
    Rep Power
    10

    Default

    We have a client with a similar situation.

    May I trouble you please to run as root:

    Code:
    netstat -an | grep CLOSING
    and post back if you have more than few connections in that state and on what ports?

    Thanks,
    Mark

  3. #3
    LMStone's Avatar
    LMStone is offline Moderator
    Join Date
    Sep 2006
    Location
    477 Congress Street | Portland, ME 04101
    Posts
    1,367
    Rep Power
    10

    Default

    Something else to try...

    On our client's system somehow Amavis had been started twice. There were 20 amavis processes running and the ten "rogue" processes wouldn't talk nicely with Postfix.

    This may not be your issue, but in our client's case first we did as the zimbra user:

    Code:
    zmamavisdctl stop
    Next, we ran top, sorted by name to put all the remaining running amavis processes listed first, and as the zimbra user killed them by PID.

    Finally, we then restarted amavis using "amavisdctl start" and all the errors went away.

    If this isn't your specific issue, you may have "rogue" zimbra component processes running, so instead of stopping just amavis as we did, I would stop all of zimbra ("zmcontrol stop") and then run top > u > zimbra and confirm no zimbra-owned processes other than your shell are still running.

    Hope that helps,
    Mark

  4. #4
    xaqar is offline Member
    Join Date
    Aug 2010
    Posts
    11
    Rep Power
    4

    Default Lmtp

    We are experiencing the same LMTP issue. We have had it 3 times now that LMTP reports busy until it is restarted. We have ~9000 users.

  5. #5
    karol@uri.edu is offline Trained Alumni
    Join Date
    Nov 2010
    Posts
    2
    Rep Power
    4

    Default Lmtp

    We upgraded to 7.1.2 on Sunday 8/21/11 hoping this might resolve the issue. It took a few days to manifest itself after we went from 6.0.12 to 7.1.1.
    I found this posting that seemed to reference our LMTP problem and decided to take a chance and upgrade.

    Zimbra Collaboration Server 7.1.2 released | Agilemail

    I'll update on the status of our Zimbra deployment after a few days go by.

  6. #6
    xaqar is offline Member
    Join Date
    Aug 2010
    Posts
    11
    Rep Power
    4

    Default

    Looks like that might be our issue as well. I'll have to do the upgrade. We rarely have fewer than 1000 IMAP sessions running.

    Thanks for the info!

  7. #7
    stuartg.orion is offline Senior Member
    Join Date
    May 2007
    Location
    Auckland
    Posts
    68
    Rep Power
    8

    Default Thanks

    I think we're seeing the same issue, our LMTP server has locked up several times over the last few weeks.

    Thanks for pointing out that fix, I'll update to 7.1.2 very sooon
    Last edited by stuartg.orion; 08-24-2011 at 12:10 PM.

  8. #8
    deepblue is offline Partner (VAR/HSP)
    Join Date
    Jul 2006
    Location
    Stuttgart / Germany
    Posts
    223
    Rep Power
    9

    Default

    Same here on 7.1.1. Only zmmailboxdctl restart helps. Does someone know the bugzilla bugid for this issue? Is it really fixed in 7.1.2?

    Regards
    Thomas

  9. #9
    burnmage is offline Intermediate Member
    Join Date
    Nov 2007
    Location
    Austin, TX
    Posts
    15
    Rep Power
    7

    Default

    We had this happen too with 7.1.1p2 in rhel 5 64bit. Restarted the zimbra daemons and it started working again. Has anyone seen a bug related to this?

  10. #10
    stuartg.orion is offline Senior Member
    Join Date
    May 2007
    Location
    Auckland
    Posts
    68
    Rep Power
    8

    Default

    The release statement above implies it's related to IMAP connections, I wonder if restarting the IMAP proxy, or dropping IMAP connections in some other manner would allow things to start working again. Restarting the mailbox daemon is a big thing and takes quite a while.

    I'm updating to 7.1.2 to see if that fixes it this weekend.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 6
    Last Post: 11-29-2010, 01:27 PM
  2. Zimbra fails after working for 2 weeks
    By Linsys in forum Administrators
    Replies: 10
    Last Post: 10-07-2008, 12:42 AM
  3. Connection refused from local mail server
    By Steve3 in forum Administrators
    Replies: 8
    Last Post: 06-02-2007, 10:09 AM
  4. system failure: getDirectContext
    By avisser in forum Installation
    Replies: 3
    Last Post: 10-12-2005, 05:32 AM
  5. Insallation failed (Debian server)
    By popui007 in forum Installation
    Replies: 5
    Last Post: 09-29-2005, 02:27 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •