I have a server with exchange 2000, (sp2), windows 2000 advanced server
(sp3) and all current hot fixes installed.
I have not had a problem with relaying before, (I have secure relaying
turned on), the guest account is disabled, and has had the password changed,
the server passes all relay checks, and is most definately not an open
but it is an open relay and people can send spam through it... how?
I have got full logging on for log on / off, and I can't see people logging
on there (I can see the guest account being locked every 3 attempts)
I have got the SMTP server logging all data into its log files, and I can
see unsuccessful attempts to authenticate to the server, but no successful
ones, how is the spam getting thru my server, I'm rapidly running out of
any ideas you guys?