Results 1 to 3 of 3

Thread: Local Loop issue...

  1. #1
    KDios is offline Starter Member
    Join Date
    Jul 2011
    Posts
    2
    Rep Power
    3

    Default Local Loop issue...

    Hello all, recently we set up an Exchange 2010 system to co-exist with users on Zimbra, and set up (we think) the system as a split domain. Routing internally and externally, all mail does get to where it is supposed to go.

    The strange part is, we're getting local loops. The loops are caused by something that doesn't appear to exist. Mail that goes from exchange accounts to any other accounts work fine. Mail from outside in is fine. Mail from inside out is fine. Mail from zimbra to exchange is not fine.

    Users can send mail internally from zimbra to exchange, and they receive it, but many emails sent from zimbra also generate a new email that bounces back and forth between both boxes. The email is sent to ''''@mydomain.com. Exchange only shows the quotes as the user. There obviously is no """" user. In zimbra, the log looks like this when the email finally stops and NDRs:

    Jul 15 13:57:25 mail postfix/smtpd[14909]: connect from mail.myexchangeserver.com[10.42.*.**]
    Jul 15 13:57:25 mail postfix/smtpd[14909]: setting up TLS connection from mail.myexchangeserver.com[10.42.*.**]
    Jul 15 13:57:25 mail postfix/smtpd[14909]: Anonymous TLS connection established from mail.myexchangeserver.com[10.42.*.**]: TLSv1 with cipher AES128-SHA (128/128 bits)
    Jul 15 13:57:25 mail postfix/smtpd[14909]: A7543200D177: client=mail.myexchangeserver.com[10.42.*.**]
    Jul 15 13:57:25 mail postfix/cleanup[14916]: A7543200D177: message-id=<20110715195517.25B58200D17C@mail.***.net>
    Jul 15 13:57:25 mail postfix/qmgr[2366]: A7543200D177: from=<>, size=7045, nrcpt=1 (queue active)
    Jul 15 13:57:25 mail postfix/smtpd[14909]: disconnect from mail.myexchangeserver.com[10.42.*.**]
    Jul 15 13:57:30 mail postfix/smtp[14917]: A7543200D177: to=<@mydomain.org>, relay=10.42.*.**[10.42.*.**]:25, delay=5.1, delays=0.1/0.01/0/5,
    dsn=5.4.6, status=bounced (host 10.42.*.**[10.42.*.**] said: 554 5.4.6 Hop count exceeded - possible mail loop (in reply to end of DATA command))
    Jul 15 13:57:30 mail postfix/qmgr[2366]: A7543200D177: removed

    The bold part is where it gets me. It generates a blank or blanket user @ my domain. I'm not sure if that's because I mistyped something in the catchall, or something else. Has anyone seen anything like this? Does anyone know where all the zmprov md information is stored?

    Thanks guys, I'll be happy to post any more info if needed.

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Location
    Vannes, France
    Posts
    23,442
    Rep Power
    56

    Default

    Quote Originally Posted by KDios View Post
    The strange part is, we're getting local loops. The loops are caused by something that doesn't appear to exist. Mail that goes from exchange accounts to any other accounts work fine. Mail from outside in is fine. Mail from inside out is fine. Mail from zimbra to exchange is not fine.
    What sort of email from Zimbra cause this problem? IS Zimbra the primary of secondary for the split domain? Di you follow the instructions in the wiki article for this configuration? Is you DNS correct fro both systems?
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    KDios is offline Starter Member
    Join Date
    Jul 2011
    Posts
    2
    Rep Power
    3

    Default

    Thanks for the response,

    Zimbra is set up as per the Split Domain wiki as a secondary, I used the Catchall commands

    "$ zmprov md example.com zimbraMailCatchAllAddress @example.com
    $ zmprov md example.com zimbraMailCatchAllForwardingAddress @example.com
    $ zmprov md example.com zimbraMailTransport smtp:mail.example.com
    "
    As well as the commands suggest afterwards. External mail doesn't loop at all. Internal mail from exchange doesn't loop, only mail originating from Zimbra and going to exchange loops, although we only have a few accounts at the minute set up in exchange. I checked the DNS a few times, and modified the hosts file on Zimbra to make sure exchange was showing up correctly. We use dyndns for other routing. Is there any special way I should modify the hosts file or is there any other location to check?

    What about the "relayhost = " field in the main.cf file? Is that only for external routing or does it need to be filled in for internal as well?

    Last thing...do you know where to find the aforementioned Catchall configuration when using zmprov? I can't figure out where that information is stored.

    Thanks again!

    Kevin
    Last edited by KDios; 07-18-2011 at 09:46 AM.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. ZD2 vs ZD1: Server vs Local
    By JPP ZoSo in forum General Questions
    Replies: 3
    Last Post: 02-04-2011, 08:58 AM
  2. postfix transport maps
    By pheonix1t in forum Administrators
    Replies: 12
    Last Post: 01-17-2009, 11:42 PM
  3. Zimbra fails after working for 2 weeks
    By Linsys in forum Administrators
    Replies: 10
    Last Post: 10-07-2008, 12:42 AM
  4. Issue with local delivery
    By multicast in forum Administrators
    Replies: 2
    Last Post: 11-20-2007, 10:49 AM
  5. Another Local Mail Delivery Issue
    By bhickey in forum Installation
    Replies: 7
    Last Post: 02-23-2006, 10:23 AM

Posting Permissions

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