Outlook 2003 with Postfix loses Mail Quietly lost connection after AUTH

Discussion in 'Server Operation' started by Nerd4Rent, Jun 26, 2006.

  1. Nerd4Rent

    Nerd4Rent New Member

    My postfix server was logging this error :
    postfix/smtpd[2966]: lost connection after AUTH from unknown[]

    The outlook 2003 user was getting successful mail sent message but the messages were lost and never made it to the recipients. Postfix never saw a message from the SMTP connection.

    I searched long and hard and finally found the problem: AOL antivirus.
    It is listed in Microsoft's support database but that wasn't where I went to look for postfix problems, I came here.

    So I thought I'd post this to let you know the problem.

    AOL antivirus scans emails and if the message has more than four recipients, the message is never sent but outlook thinks it was. It affected Outlook 2003 for me. Disabling AOL's email scanner fixed the problem.

    The real solution is to stop using AOL as it is an inferior product at a high price but that's out of my control.
  2. falko

    falko Super Moderator ISPConfig Developer

    Thanks for the hint. It's good to know this. :)

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