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Thread: Mail error on delivery.

  1. #1
    micasrafael is offline Member
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    Default Mail error on delivery.

    Hi. When i try to send a msg to sadc.int domain i get the following error:

    ################################################## #
    This is the mail system at host server.domain.

    I'm sorry to have to inform you that your message could not be delivered to
    one or more recipients. It's attached below.

    For further assistance, please send mail to postmaster.

    If you do so, please include this problem report. You can delete your own
    text from the attached returned message.

    The mail system

    <tcamela@sadc.int>: host mail.sadc.int[208.92.232.65] said: 554 5.7.1
    <server.domain>: Helo command rejected: Host not found
    (in
    reply to RCPT TO command)
    #################################################

    What might be happening?

    I already checked the XBL, SBL and RBL and my public IP and domain are not listed there.


    micasrafael

  2. #2
    phoenix is online now Zimbra Consultant & Moderator
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    Default

    Quote Originally Posted by micasrafael View Post
    What might be happening?
    What is happening is that you have no DNS A record pointing to your Zimbra server, see the results below:

    Code:
    dig sadc.int mx
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 15757
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
    
    ;; QUESTION SECTION:
    ;sadc.int.                      IN      MX
    
    ;; ANSWER SECTION:
    sadc.int.               86400   IN      MX      5 mail.sadc.int.
    
    ;; Query time: 1073 msec
    ;; SERVER: 192.168.200.254#53(192.168.200.254)
    ;; WHEN: Wed Sep 29 23:04:12 2010
    ;; MSG SIZE  rcvd: 47

    Code:
    dig sadc.int any
    
    ; <<>> DiG 9.7.1 <<>> sadc.int any
    ;; global options: +cmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35989
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 0
    
    ;; QUESTION SECTION:
    ;sadc.int.                      IN      ANY
    
    ;; ANSWER SECTION:
    sadc.int.               86400   IN      SOA     mstrsky.vbnservices.net. hostmaster.vbnservices.net. 2007250783 28800 7200 604800 86400
    sadc.int.               86400   IN      MX      5 mail.sadc.int.
    sadc.int.               86400   IN      NS      mstruul.vbnservices.net.
    sadc.int.               86400   IN      NS      mstrsky.vbnservices.net.
    sadc.int.               86400   IN      NS      ns1vbn.vbnservices.net.
    sadc.int.               86400   IN      NS      ns2vbn.vbnservices.net.
    sadc.int.               86400   IN      NS      ns2uul.vbnservices.net.
    sadc.int.               86400   IN      NS      ns1uul.vbnservices.net.
    
    ;; Query time: 1873 msec
    ;; SERVER: 192.168.200.254#53(192.168.200.254)
    ;; WHEN: Wed Sep 29 23:04:20 2010
    ;; MSG SIZE  rcvd: 237
    You need to fix that DNS record problem.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    micasrafael is offline Member
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    The sadc.int it's not my domain. So that might be their problem.

    Here is the output that i got from the dig command:

    ; <<>> DiG 9.4.2-P2.1 <<>> sadc.int mx
    ;; global options: printcmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42344
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 1

    ;; QUESTION SECTION:
    ;sadc.int. IN MX

    ;; ANSWER SECTION:
    sadc.int. 8735 IN MX 5 mail.sadc.int.

    ;; AUTHORITY SECTION:
    sadc.int. 8735 IN NS ns2vbn.vbnservices.net.
    sadc.int. 8735 IN NS mstrsky.vbnservices.net.
    sadc.int. 8735 IN NS ns1uul.vbnservices.net.
    sadc.int. 8735 IN NS ns1vbn.vbnservices.net.
    sadc.int. 8735 IN NS ns2uul.vbnservices.net.
    sadc.int. 8735 IN NS mstruul.vbnservices.net.

    ;; ADDITIONAL SECTION:
    mail.sadc.int. 8735 IN A 208.92.232.65

    ;; Query time: 0 msec
    ;; SERVER: 127.0.0.1#53(127.0.0.1)
    ;; WHEN: Wed Sep 29 22:14:35 2010
    ;; MSG SIZE rcvd: 206
    And


    ;
    <<>> DiG 9.4.2-P2.1 <<>> sadc.int any
    ;; global options: printcmd
    ;; Got answer:
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 7493
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 7, AUTHORITY: 6, ADDITIONAL: 1

    ;; QUESTION SECTION:
    ;sadc.int. IN ANY

    ;; ANSWER SECTION:
    sadc.int. 8695 IN NS mstrsky.vbnservices.net.
    sadc.int. 8695 IN NS ns1uul.vbnservices.net.
    sadc.int. 8695 IN NS ns1vbn.vbnservices.net.
    sadc.int. 8695 IN NS ns2uul.vbnservices.net.
    sadc.int. 8695 IN NS ns2vbn.vbnservices.net.
    sadc.int. 8695 IN NS mstruul.vbnservices.net.
    sadc.int. 8695 IN MX 5 mail.sadc.int.

    ;; AUTHORITY SECTION:
    sadc.int. 8695 IN NS mstrsky.vbnservices.net.
    sadc.int. 8695 IN NS ns2uul.vbnservices.net.
    sadc.int. 8695 IN NS ns1uul.vbnservices.net.
    sadc.int. 8695 IN NS ns2vbn.vbnservices.net.
    sadc.int. 8695 IN NS ns1vbn.vbnservices.net.
    sadc.int. 8695 IN NS mstruul.vbnservices.net.

    ;; ADDITIONAL SECTION:
    mail.sadc.int. 8695 IN A 208.92.232.65

    ;; Query time: 0 msec
    ;; SERVER: 127.0.0.1#53(127.0.0.1)
    ;; WHEN: Wed Sep 29 22:15:15 2010
    ;; MSG SIZE rcvd: 290
    Thanks

  4. #4
    dalmate is offline Elite Member
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    please show the output of "hostname" and "hostname -f" command

  5. #5
    micasrafael is offline Member
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    Default Hostname command

    Quote Originally Posted by dalmate View Post
    please show the output of "hostname" and "hostname -f" command
    Here is the output of the coomand hostname:

    siadmin@Zambeze:~$ hostname
    Zambeze.isutc.transcom.co.mz
    siadmin@Zambeze:~$ hostname -f
    Zambeze.isutc.transcom.co.mz

  6. #6
    dalmate is offline Elite Member
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    your hostname is good.
    In the error message, I saw that the destination server doesn't accept your mail because your HELO command of your mail server.
    Maybe they use "reverse lookup" in their mail server, and it checked your address in the HELO command, it can't see your domain in their DNS so it reject your mail.
    Is your domain public? Can you ping it from outside?

  7. #7
    micasrafael is offline Member
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    Quote Originally Posted by dalmate View Post
    your hostname is good.
    In the error message, I saw that the destination server doesn't accept your mail because your HELO command of your mail server.
    Maybe they use "reverse lookup" in their mail server, and it checked your address in the HELO command, it can't see your domain in their DNS so it reject your mail.
    Is your domain public? Can you ping it from outside?
    Yes, the domain is public: isutc.transcom.co.mz

  8. #8
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by micasrafael View Post
    Yes, the domain is public: isutc.transcom.co.mz
    The problem is, for that sub-domain, you have no valid A or MX records pointing to your server - even for the domain transcom.co.mz there is only an MX record and no A record.

    Is this Zimbra server behind a NAT router? If it is you will need a Split DNS set-up, in any case you should go to the 'Verify...' section of that article and check your DNS & hosts file configuration.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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