>> >How can I check that our Exchange 5.5 server will not relay e-mail and
>> >contribute to the spam problem? Only those with an account in our network
>> >domain should be allowed to send mail through our server.
>> As much as I don't like these guys, telnet (right from the keyboard of
>> the Exchange server) to "mail-abuse.org" and it'll run a short test.
>> It'll fail on test #6 and stop, but if it gets that far your server is
>I hope if it fails it doesn't immediately add you onto their blacklists...
No, it doesn't. But it is just an abbreviated version of the tests
they'll run. The test is instructive and non-intrusive in that it
doesn't actually send any data, just the RSET, MAIL FROM and RCPT TO
MCSE+I, Exchange MVP
MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm