Do these rules apply to 7.2?
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Steven Plautz
> Sent: Thursday, July 05, 2001 8:07 AM
> To: IMail_Forum@list. ipswitch. com
> Subject: [IMail Forum] spam filters
>
>
> I found the below rules in the rules.ima file takes care of a
> good majority
> of incoming spam with minimal risk of deleting valid messages:
>
> F!~@:NUL
> T!~@:NUL
> H!~\sTo\::NUL
> S~\s\s\s\d\d\d:NUL
> S~adv\::NUL
>
> The first two rules take care of messages without an email address in the
> FROM or TO fields. These seach for the @ character to make sure it's
> present.
> The third filter makes sure the TO field is actually there and deletes any
> messages without it. Isn't the lack of a TO field or not having
> a properly
> formatted email addresses in the TO and FROM fields RFC
> violations? If so,
> no one should feel uneasy about the first 3 filters.
>
> The fourth is the best filter I have found to date. Much of the spam that
> comes in have a number spaced out to the far right on the subject
> line. So
> this filter simply looks for at least 3 spaces preceeding at
> least 3 digits
> in the subject line. You'd be surprised how effective this one filter is!
>
> The last one simple looks for "adv:" in the subject.
>
> Anyone have anymore that are effective and relatively safe from deleting
> valid mail?
>
> Steven Plautz
> Sr. ISP Systems Admin
> Omega Communications - Sybercom
> [EMAIL PROTECTED]
>
>
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