Hi,
I have some NAT boxes running FreeBSD, each of these boxes do NAT for
like 100+ people.
Almost everyday my IPs got blacklisted because of spam. I cant block the
smtp traffic going out became some people need it to send true e-mails.
Are there any tool to detect/block those spams?
I tought in a program that receive the connection diverted/forwarded by
ipfw and then deliver it to SpamAssassin ...
I also have an e-mail server fully configurated with anti-spam,
anti-virus ... I tried forward to this e-mail server all my NAT box tcp
connections to port 25.
ipfw add fwd xx.xx.xx.xx,25 tcp from 192.168.0.0/24 to any 25
I got some matches in this rule when I try to send an email, but I didnt
get redirected to my email server.
Any ideas and/or sugestions?
Thanks
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