I have a new customer that has an office less than a mile from my office. We both use Bellsouth DSL. For some reason I cannot receive his email unless he replies to an email that I sent. I realize that distance has nothing to do with this but it just makes it more frustrating. Sometimes he does not receive my email unless I am replying to an email from him. I don't seem to have this problem with any other customer. What could be the problem? Is there something in our signatures that is triggering the spam filter? How do we force exchange/outlook/OE to trust each others address?
I use Outlook, ISA, Symantec Agent for Exchange. My client uses Outlook Express.