Just a quick clarification question. If iMail is setup to require user
authorization (username + password) to send messages, why is the "relay for
address" necessary? It seems this setting alone would stop spammers from
accessing the system. Please forgive my ignorance on this subject...
----- Original Message -----
From: "Len Conrad" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, May 09, 2000 9:24 PM
Subject: Re: [IMail Forum] SMTP AUTH vs. MAPS vs. Virus Questions...
>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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