From Postmaster Email Bouncing

Al Cooper cooper at
Thu Jun 7 17:58:31 IST 2012

Hi All,


A few weeks ago my server's emails sent from the postmaster user started to
bounce with the following error message: 


The following addresses had permanent fatal errors ----- <user>

    (reason: 553 5.1.8 <root at>... Domain of sender address
root at does not exist)

    (expanded from: <root at>)


It appears that my email is being blocked because there are not DNS records
for the sub-domain


If this is correct how do I change the postmaster sender address from to


Or is there a better solution?


Thanks for your help,



This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

-------------- next part --------------
An HTML attachment was scrubbed...

More information about the MailScanner mailing list