[Techtalk] stopping outgoing virus mail

[Brenda Bell]

Quoting Conor Daly <conor.daly at oceanfree.net>:

> You _should_ be able to manage this using the "transparent proxy"
> method:
> 
> o Configure the firewall to do port forwarding.
> o At the firewall, forward _any_ outgoing to port 25 to SMTP server
> port 25.
> o Configure tho SMTP server to send outgoing mails on port 50025.
> o At the firewall, forward outgoing from SMTP server to port 50025
> to
>   internet on port 25.
> 
> That allows you to do your outgoing virus filtering/detection stuff
> on the
> SMTP server _even_ for those viruses that have their own SMTP
> clients.  It
> should handle the case of IIS also.

Of course.  Very slick.

-- 
Brenda
http://opensource.theotherbell.com