I ve a client with :
3 workstations (xp/Outlook 2007), have mails using smtp.orange.fr
and pop3 : pop.orange.fr ; they have many spams.
There’s an OpenBSD 4.6 machine configured as Firewall.
Local area network can only use ports : 443, 80, 25, and 110 (out), nothing is open (IN). Is there a way to filter spams ? Attached a small diagram.
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