Recently I was informed that the reason I could not get an email to go through to another party was that my server was on a black list because of SPAM. I've always been verycertain that this could not happen because I am a small business with only a couple of email accounts, web mail is not available, POP3 is a secure connection. My fire wall only allows SMTP traffic to/from the email server, not from any other machine on the network etc.... So is there a way to check message logs, monitor traiffic etc. to ensure that spam is not passing through my email server? O/S Win03x64 and Ex 2007

You're probably not relaying SPAM. You can be inadvertently added to a blacklist without actually sending SPAM.