[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Domain of sender address does not exist



Please help !  One of our clients with their own domain is getting the error message " Domain of sender address user at domain.com does not exist " when they try to send messages to some but not all email recepients.  What could be the problem and how do we rectify this.  The error code is " Diagnostic-Code: SMTP; 553 5.1.8 "
 
Regards
 
Alamicha Chapuma