Forward error unable to relay

Question / Problem

I get an error message "unable to relay..." in the log of SmartPOP2Exchange when it tries to send mail to my SMTP server. What does this mean?

Answer / Solution

"unable to relay..." means your SMTP server does not allow SmartPOP2Exchange to send mail to it (as a SMTP relay server). Please first check the entered mail addresses in the "SMTP settings" of SmartPOP2Exchange. Make sure that these addresses also exist on your SMTP server. If you like your SMTP Server to send/forward that mail to an external server then set your SMTP server to allow all SMTP relays or at least relaying from SmartPOP2Exchange. (For MS Exchange Server you will find this setting in the properties of the "virtual SMTP server")