----- Original Message ----- 
From: "Mike Hughes" <[EMAIL PROTECTED]>

> This is very true, but the problem is that we don't know what people are
> using out in the field and some of our NAV/SAV clients subscriptions are
out
> of date and they no longer have the latest virus defs.

SMTP Auth will not help to stop virus laden messages from coming into your
users, nor prevent users from spreading viruses to everyone else hosted on
your mail server.  It will only help prevent the outbound delivery of
viruses.  That's why I also suggested a virus scanner integrated with the
MTA (mail server), like Declude Virus, which will prevent inbound and
outbound virus spread.

My suggestion is to rely on each product/feature for what they were designed
to do: virus scanners to stop virus laden e-mails, and SMTP Auth and/or
relay for addresses to prevent open relay spamming.

Bill


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