We have a web site that emals clients by relaying via our exchange server, all secure, the exchange server has te exception that wth web sits IP can relay (not a public web site by the way)
and all works fine, we also use icritical (similar to messaglabs)
one client wont acept mail as they say its being relayed.
we are not an open relay, all test come back negative, just did the dnsstuff one this morning all 15 tests pass.
anything we can do so they get the mail?
we are on exchange 2003 sp2
there whitlelisted on our system, but refuse to change anything there end i cant see what we can do to help out on this.