>Problem 1) BULK EMAIL Outsiders using our system to rely / propogate their
>spam?
>Solution 1) Setup and require iMail's SMTP AUTH option for all clients.
that + 'relay for addresses' plus stop ip spoofing at your border
router. this will make it impossible for you to used as an 'open relay.
>Problem 2) SPAM Messages: The "Fruit" or Spam message itself - delivered
>to our users.
this can reduced by subscribing to mail-abuse.org's MAPS databases, see below
>Problem 3) VIRUSES - Worms, Trojans Etc that infect user's PCs.
this is called 'content filtering' as opposed to header filtering. You can
do this at an email gateway 'chokepoint' but the software is not cheap and
the machine needs to be a monster to keep up with serious traffic. still
need wkstn virus protection
I think you've got the picture.
Len
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