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Thread: Trouble sending emails

  1. #1
    Join Date
    May 2010
    Rep Power

    Default Trouble sending emails

    I am getting myself well acquainted with ZCS. Which I have to say, I REALLY like. Except for the whole can't send email issues. I can receive them from the outside world, but nothing makes it past the MTA for outgoing mail.

    Using the Web Mail Client, I get the following error message the FIRST time I hit send:

    try again: unable to connect to the MTA.

    If I hit send a SECOND time, I get this message:

    system failure: Unable to get SMTP session for...

    The zimbra.log shows no errors/failures/issues that I can recognize. The nmap shows smtp assigned to port 25.

    Dig shows this:
    zimbra@rt1:~$ dig mx
    ; <<>> DiG 9.4.2-P2.1 <<>> mx
    ;; global options:  printcmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43924
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
    ;            IN      MX
    ;; AUTHORITY SECTION:     3600    IN      SOA 1274384627 3600 300 1814400 300
    ;; Query time: 25 msec
    ;; SERVER:
    ;; WHEN: Fri May 21 05:45:17 2010
    ;; MSG SIZE  rcvd: 98
    The version of ZCS: Release 6.0.6_GA_2330.UBUNTU8_64 UBUNTU8_64 FOSS edition.

    I've attempted to change the MTA global settings to use various hosts as defined on the system. The original value I had was set to "rt1". Here's the contents of my /etc/hosts file:

    Code:     localhost localhost.localdomain   rt1
    Any thoughts? It feels like I'm doing something terminally stupid.

    Thanks for the help!

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Vannes, France
    Rep Power


    According to the dig repsonse you have no valid MX record, you need an A & MX record pointing to the Zimbra server. If you're behind a NAT router you'll need a Split DNS set-up.


    Acompli: A new adventure for Co-Founder KevinH.

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