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Mar 04 2009

ISPConfig on Ubuntu rejecting mail to valid mailboxes

Posted by liggyman in IT issues, Knowledge Base

I recently setup ISPConfig 3 RC2, on an Ubuntu 8.04 server following the install instructions provided on the ISPConfig site.  I did however experience an issue with inbound mail being rejected for valid mailboxes with the following error:

Action: failed
Status: 5.1.1
Diagnostic-Code: x-unix; ERR: authdaemon: s_connect() failed: Permission denied
Invalid user specified.

This was resolved by changing the ‘maildrop’ line in ‘/etc/postfix/master.cf’ to:

flags=R user=vmail argv=/usr/bin/maildrop -d vmail ${extension} ${recipient} ${user} ${domain} ${sender}

Additional:

The following may also be required to fix this error:

chmod 4755 /var/run/courier/authdaemon


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This entry was posted on Wednesday, March 4th, 2009 at 4:14 pm and is filed under IT issues, Knowledge Base. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

3 Responses to “ISPConfig on Ubuntu rejecting mail to valid mailboxes”
  1. Dallas Ray says:
    March 29, 2009 at 2:02 pm

    This helped us tremendously. Thank you so much!

  2. mark says:
    April 14, 2009 at 7:07 pm

    I bookmarked this site, Thank you for good job!

  3. Q says:
    May 13, 2009 at 4:15 am

    same issue here, tried both just fixing the permissions resolved it for me

    chmod 4755 /var/run/courier/authdaemon

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