My client has an SBS 2003 server and is sending his emails via exchange. The exchange in turn relays the messages off his ISP's SMTP server (this has reverse DNS setup correctly and is definately not on any blacklists).
When messages are recieved at the far end - if the user is using Outlook - invariably messages from the clients domain end up being put by Outlook directly into Junk.
What can we do to minimise this ? - Could the problem be related to his domain ? how can i check the reputation of his domain ?