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Thread: Temporary Lookup Failures

  1. #1
    Billy is offline Active Member
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    Default Temporary Lookup Failures

    Now I'm becoming a pest!

    I get periodic 'temporary lookup failures'. Does anyone know what could cause that? It doesn't happen all the time. Aren't the lookups happening on the mail host machine - like the local LDAP?

    snippet from messgage:

    In: MAIL FROM:<xxx@xxx.com> SIZE=16244640
    Out: 250 Ok
    In: RCPT TO:<yyy@xxx.com>
    Out: 451 <yyy@xxx.com>: Temporary lookup failure
    In: QUIT
    Out: 221 Bye

  2. #2
    KevinH's Avatar
    KevinH is offline Expert Member
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    Default

    Anything in /var/log/zimbra.log? or in /opt/zimbra/logs/zimbra.log?

  3. #3
    Billy is offline Active Member
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    Default log

    Oct 24 09:59:48 ns3 postfix/smtpd[14635]: connect from localhost.localdomain[127.0.0.1]
    Oct 24 09:59:48 ns3 postfix/smtpd[14635]: disconnect from localhost.localdomain[127.0.0.1]
    Oct 24 09:59:50 ns3 postfix/smtpd[5467]: warning: dict_ldap_lookup: Search error -5: Timed out
    Oct 24 09:59:50 ns3 postfix/smtpd[5467]: NOQUEUE: reject: RCPT from unknown[64.9.207.213]: 451 <xxx@yyy.com>: Temporary lookup failure;
    from=<zzz@yyy.com> to=<xxx@yyy.com> proto=ESMTP helo=<[127.0.0.1]>
    Oct 24 10:00:42 ns3 postfix/smtpd[14635]: connect from localhost.localdomain[127.0.0.1]
    Oct 24 10:00:42 ns3 postfix/smtpd[14635]: disconnect from localhost.localdomain[127.0.0.1]
    Oct 24 10:01:43 ns3 postfix/smtpd[14635]: connect from localhost.localdomain[127.0.0.1]
    Oct 24 10:01:43 ns3 postfix/smtpd[14635]: disconnect from localhost.localdomain[127.0.0.1]
    Oct 24 10:02:05 ns3 postfix/cleanup[17359]: 8B5B210E4B5C: message-id=<20051024140205.8B5B210E4B5C@ns3.yyy.com>
    Oct 24 10:02:05 ns3 postfix/smtpd[5467]: disconnect from unknown[64.9.207.213]
    Oct 24 10:02:05 ns3 postfix/qmgr[5466]: 8B5B210E4B5C: from=<double-bounce@ns3.yyy.com>, size=1200, nrcpt=2 (queue active)
    Oct 24 10:02:07 ns3 postfix/lmtp[17360]: 8B5B210E4B5C: to=<sales@interalab.com>, orig_to=<postmaster>, relay=ns3.yyy.com[64.9.xxx.xxx],
    delay=2, status=sent (250 2.1.5 OK)
    Oct 24 10:02:07 ns3 postfix/lmtp[17360]: 8B5B210E4B5C: to=<admin@ns3.interalab-dns.com>, orig_to=<postmaster>,
    relay=ns3.interalab-dns.com[64.9.xxx.xxx], delay=2, status=sent (250 2.1.5 OK)
    Oct 24 10:02:07 ns3 postfix/qmgr[5466]: 8B5B210E4B5C: removed
    Oct 24 10:02:20 ns3 postfix/smtpd[14635]: connect from unknown[64.9.207.213]

  4. #4
    KevinH's Avatar
    KevinH is offline Expert Member
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    Default

    Well the problem is that postfix is timing out trying to connect to LDAP. Can you confirm slapd (OpenLDAP) is running? Maybe try to telnet to it.

    telnet 0 389

  5. #5
    Billy is offline Active Member
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    Default Telnet

    [root@ns3 ~]# telnet 0 389
    Trying 0.0.0.0...
    Connected to 0 (0.0.0.0).
    Escape character is '^]'.


    >>>>>>>

    Looks like it's up.

    Since it's only occasionally, could this be a problem with the server not being powerful enough - it's not a great machine.

  6. #6
    KevinH's Avatar
    KevinH is offline Expert Member
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    Quote Originally Posted by Billy
    Since it's only occasionally, could this be a problem with the server not being powerful enough - it's not a great machine.
    Since it's not all the time maybe. What's the load like on the server? Are you pinning the CPU just with basic test like searching mail etc?

  7. #7
    Billy is offline Active Member
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    Default load test

    I got Java up to 83% CPU time with out too much trouble. I'm almost convinced - since it's a temporary time out issue.

    Thanks for your help.

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