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MX record pointing to different IP and rejected mails

Discussion in 'Plesk for Windows - 8.x and Older' started by guybrushtw, Apr 26, 2007.

  1. guybrushtw

    guybrushtw Guest

    Hi all:

    I have searched the forums, but can't seem to find a suitable answer. This is mi case:

    Our domain lives in a dedicated server at a hosting company, with IP 62.xx.xx.87.

    Recently we changed the MX record to point to our Exchange server, in our company. We have an external fixed IP given by an ISP: 213.xx.xx.117.

    Everything is fine, except for some domains, which reject our mail:

    2007-04-26 06:57:33 194.x.x.80 OutboundConnectionCommand SMTPSVC1 - MAIL FROM:<someone@domain.com> 0
    2007-04-26 06:57:33 194.x.x.80 OutboundConnectionResponse SMTPSVC1 - - 550+5.7.1+Access+denied 0

    However, if I try to send that same mail from the hosting company IP via telnet to port 25, it works perfectly.

    I've been reading about it, and I guess we should have a PTR record for the Exchange server. Is that right? How can I set it? Should it be written in the DNS zone in our dedicated server, pointing to the IP given by our ISP?

    This is my current DNS table:

    $TTL 86400

    @ IN SOA ns.domain.com. a.a.a. (
    1164006442 ; Serial
    10800 ; Refresh
    3600 ; Retry
    604800 ; Expire
    3600) ; Minimum

    domain.com. IN NS ns.domain.com.
    domain.com. IN NS dns1.domain.com.
    domain.com. IN NS dns2.domain.com.
    ns.domain.com. IN A 62.xx.xx.87
    domain.com. IN A 62.xx.xx.87
    webmail.domain.com. IN A 62.xx.xx.87
    mssql.domain.com. IN A 62.xx.xx.87
    sitebuilder.domain.com. IN A 62.xx.xx.87
    mail.domain.com. IN A 213.xx.xx.117
    dns1.domain.com. IN A 62.xx.xx.88
    dns2.domain.com. IN A 62.xx.xx.89
    exchange.domain.com. IN A 213.xx.xx.117
    ftp.domain.com. IN CNAME domain.com.
    www.domain.com. IN CNAME domain.com.
    lists.domain.com. IN CNAME domain.com.
    domain.com. IN MX 10 mail.domain.com.

    TIA and best regards,