I've got a site with 3 exchange servers. There's a problem with some email from some users not be recieved by outside recipients and I think there's a spam checking issue. Whilst I've checked Spam-lists etc, I think one of the problems is setting the correct Fully Qualifed Domain Name for each Server.
The site uses several email domains, say Dom1.com, Dom2.com etc. They are all used to various degress but Dom1.com is the main one.
What should I set the FQDN to on each server? SHould I use the masquade text box too?
(I've put the question to 500 points because I'd appreciate an explanation as well as an answer)