I have seen many similar questions but have not seen a solution that matches my exact requirements...
I have a Small Business/Exchange Server 2003.
Local domain is servername.company.local
Users have POP3 email addresses e.g. firstname.lastname@example.org which are working fine with email@example.com set as primary SMTP address for 'reply' to function (users also have firstname.lastname@example.org).
However, I get the error indicated when email@example.com attempts to send email to firstname.lastname@example.org (my user has 2 pop3 addresses to keep work & play separate but occasionally wants to 'send' work home).
A solution to this problem would be greatly appreciated.
Thank you in advance