OK maybe simple but I am scratching my head!
Just setup SBS2003 using smtp for mail delivery, i can send to domain email addresses from within the domain, and from my yahoo account but when i try to send to any addresses from my domain (completely separate) i get this message:
Your message did not reach some or all of the intended recipients.
Subject:
Sent: 01/06/2007 18:13
The following recipient(s) could not be reached:
user@problemdomain.com on 01/06/2007 18:13
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mydomain.co.uk #5.5.0 smtp;550 won't relay to user@problemdomain.com>
Any ideas?
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