For the last week we've had a big problem with complaints that some
messages are being returned indicating:
553 Bogus Helo italy101. < http://unblock.secureserver.net/?ip=69.74.100.2 >
Our mail server isn't 69.74.100.2, it is 69.74.100.88
We've gone in and tightened up MS SMTP service (which one client was
using for a form-mail like app)
which *may* have been NAT'd to that IP address (still not sure).
If I telnet to that .2 address on ports 25 or 110 nothing appears to be there
Any suggestions on why this might be occuring, what it means and what
I should look at to address it?
Thanks !!!
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