Hi,

I have a Lotus Notes mail server behind my Pix firewall 5.3(1), the problem
is anyone from outside is able to telnet my smtp port 25 and compose a mail
and send it. The issue is though my mail server restricts free relay he/she
can compose a mail via telnet to port 25 in name of anyone else in the same
domain and send a false mail on his behalf.
So is there anyway where by I can block the telnet to port 25 and thereby
stop the composition of a mail. Is there a way to authorise/restrict access
the telnet to service ports.
Requesting assistance

Regards
Navin Mehra
Softcell Technologies
Ph. 460 6969 Extn. 220

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