RE: Blocking an individual email address




Jim Csoka wrote:
No...I ran make maps, as well as make install for the blacklist
feature,
and make restart.

However, here is something interesting. When I access my
corporate
email via openwebmail, it functions as I would expect....you
cannot send
or receive to the given address. However, when using Outlook
Express
(internal mail client at work), you can still send mail to the
address I
am trying to block.

Why should this be so?

Are you sure Outlook Express is configured to use your FreeBSD
server
for SMTP? Send an email to yourself using Outlook Express then
look at
the message source and check the headers to verify which SMTP
server
is sending the message.

--
Ken Stevenson
Allen-Myland Inc.


Yes, I'm sure. It is the incoming and outgoing SMTP server. It's
the only
one we have.

-Jim

_______________________________________________

Yes that may be the only one you have, but that does not stop the
user from configuring their outlook express from using their
personal email account at their ISP. To stop this you can add
firewall rules to deny all LAN traffic out to ports 25 & 110 by
coding the private LAN ip address range in the rule "from" option.
Since your SMTP service is on the gateway box where the firewall is
your outbound port 25 will pass because your using the public ip
address or if that is not the case then just add a rule before the
deny rule to pass your SMTP LAN ip address.




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