I'm using GM 2.1.1 and when I send a mail message the system displays this:

A fatal error has occured:

GT::Mail::Send (600): SMTP: Local user 'usr_012345@yahoo.com' unknown on host '[undefined]'. Server said: 450 RCPT TO: Relaying not allowed at E:/WebMail/Admin/GT/Mail.pm line 298.


Or this:


GT::Mail::Send (600): SMTP: Local user 'anydir@hotmail.com' unknown on host '[undefined]'. Server said: 450 RCPT TO: Relaying not allowed at E:/WebMail/Admin/GT/Mail.pm line 298.




This only when the field "To" contains an address with a diferent domain that the I have configured.

Any sugestion??

Thank's!