For several weeks now, exchange IMF rejects messages received from a certain external domain to only one of the company employee's email adresses.
By testing and sending mails (also via telnet sessions). If i try to send a mail from that domain to the person, i get the error message:
"550 5.7.1 Requested action not taken: message refused
Connection closed by foreign host."
If i then check Message Tracking Center, there are messages "SMTP: Message rejected by Intelligent Message Filtering".
I just enabled archiving and already mails from that external domain are getting dumped in the archive folder.
Even by setting the SCL scale levels to 9 it rejects the external domain.
Is there any way to let IMF accept mails from this domain?
The server is a SBS 2003 with Exchange 6.0 & exchange SP2.