Problem configuring postfix as backup mx

Discussion in 'Server Operation' started by iNiko, Feb 11, 2009.

  1. iNiko

    iNiko New Member

    Hi all,
    i need to configure a secondary mx using posfix.. to do this i've followed this how to.

    When i stop postfix on the primary mx, seems that the email are received by backup mx but when i restart postfix on the primary emails are not delivered to it.. and the users cannot receive nothing.

    Some logs on backup mx:
    Code:
    Feb 11 22:17:19 neptune postfix/qmgr[19273]: 6D41C1200149: from=<onemyexternalaccount@gmail.com>, size=14816, nrcpt=1 (queue active)
    Feb 11 22:17:49 neptune postfix/smtp[26666]: 6D41C1200149: to=<me@domain.com>, relay=none, delay=102080, delays=102050/0.03/30/0, dsn=4.4.1, status=deferred (connect to primarymx.domain.com[primary_MX_IP]: Connection timed out)
    
    Backup MX main.cf:
    Code:
    
    myhostname = neptune.domain.com
    mydomain = domain.com
    
    smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, permit_mx_backup
    relay_domains = $mydestination domain.com testdomain.com
    
    relay_recipient_maps =
    maximal_queue_lifetime = 60d
    transport_maps = hash:/etc/postfix/transport
    
    /etc/postfix/transport :

    Code:
    domain.com	smtp:primarymx.domain.com
    testdomain		smtp:primarymx.testdomain.com
    
    Obviusly on primary mx maillog i've no logs about the emails received by backup mx..

    What's my mistake? How can i solve ?

    Thank you so much for help!
     
  2. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    Can you connect from the backup MX to the primary MX like this?
    Code:
    telnet primarymx.domain.com 25
     

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