bbxrider wrote:
> yes, but..........................
> i have a spam filter on my client, spambayes, and it works fine to
> sort out spam sent
> to a 'real' account
> the problem here is numbers, the spammer is spoofing my domain with a
> constantly changing
> name (but with a constant piece of it) with dozens if not hundreds a
> day, are coming back to my domain pop3 with invalid address messages,
> i don't want to deal with those and besides its further clogging the
> pipes with messages being sent to me that are unnecessary, so my hunt
> continues to determine a way
> to have spam assassin handle it at my pop3, sitelutions.com, since
> they don't seem to have
> another way to handle it.
> thanks bbxrider
>
Ah, you are talking about "back-scatter". While it's a nuicance, it's not
actually spam - no matter that it's caused by spam originally.
I don't want my SpamAssassin to take those as spam.. because redirect my spam
to SpamCop for reporting, and backscatter is not spam.
If you can't turn off the catch-all feature of your email service, I think the
best you can do is to filter backscatter in your POP-client using subject
headers.
Here is my collection of headers triggering my back-scatter procedure (which is
to add a header "X-Bounce: Yes" which will then be used to direct the mail to a
special folder.
This is for maildrop, but the subject headers can be used in any mailer. 99% of
delivery reports seem to get caught with these, so backscatter is no problem to
me any more.
if ( /^Subject: Mail Delivery Problem/ || \
/^Subject: Mail Delivery \(failure/ || \
/^Subject: Undelivered Mail Returned to Sender/ || \
/^Subject: virus found in sent message/ || \
/^Subject: failure notice / || \
/^Subject: Mail delivery failed/ || \
/^Subject: Delivery Status Notification/ || \
/^Subject: Undeliverable:/ || \
/^Subject: Undeliverable mail/ || \
/^Subject: Returned mail: / || \
/^Subject: DELIVERY FAILURE: User / || \
/^Subject: Yahoo! Auto Response/ || \
/^X-ME-bounce-domain:/ || \
/^X-Failed-Recipients:/ || \
/^X-Yahoo-Newman-Property: groups-bounce/ || \
/^Diagnostic-Code: X-Postfix; host / || \
/^Content-type: multipart\/report;/ || \
/^Subject: Delivery failed:/ || \
/^Subject: DELIVERY FAILURE:/ || \
/^Subject: MESSAGE NOT DELIVERED: / || \
/^Subject: Delivery problem/ || \
/^Subject: Email Failure Notification/ || \
/^Subject: Email not allowed/ || \
/^Subject: failure delivery/ || \
/^Subject: failure notice/ || \
/^Subject: Mail Not Delivered/ || \
/^Subject: mail failed, returning to sender/ || \
/^Subject: Nondeliverable mail/ || \
/^Subject: Warning: could not send message for/ || \
/^Subject: MDaemon Warning - Virus Found/ || \
/^Subject: Permanent Delivery Failure/ || \
/^Subject: Mail System Error - Returned Mail/ || \
/^Subject: Mail System Error - Undeliverable Mail/ || \
/^Subject: Transient Delivery Failure/ || \
/^Subject: Message status - undeliverable/ || \
/^Subject: Warning: message / || \
/^Subject: Undeliverable: / || \
/^Subject: Delivery failure/ )
{
`logger -p mail.info "** BOUNCE RECEIVED **"`
xfilter "reformail -a'X-Bounce: Yes '"
SCAN_SPAM=0
}
