hi ya gary
> >> > [EMAIL PROTECTED]
> >> > SMTP error from remote mailer after MAIL FROM:<[EMAIL PROTECTED]>:
> >> > host mail.otherdomain.net [otherip.otherip.otherip.otherip]: 550
> >> > 5.7.1 Mail from myip.myip.myip.myip
> >> refused by blackhole site dnsbl.njabl.org
> >
> >see http://www.njabl.org/enduser.html
>
> /documentclass(rant)
> /begin(document)
>
> These blacklists may be more trouble than they're worth if they are used
> indiscriminately. My own ISP checks negative on 31 BLs, positive on 3,
ditto ... yuppers..
there are 126 RBLs on one list and 76 on another...
http://www.moensted.dk/spam/
http://www.declude.com/junkmail/support/ip4r.htm
- so far .. all those that got rejected based on RBLs are valid rejects
of spammers ...
- i think that a mail server admin should get itself back OUT of the rbl
is they are truely not an open relay... or supporting spammers
- takes a lot of effort sometimes ...
-
- sometimes simply testing yourself for an open relay get you
listed as what happened to one of my boxes... that was a pain
to get back out..
- my spam level went from say 100/day down to one-z two-z now ..
"very lonely" now :-) ...
- reject anything with bad reverse dns
- reject based on the rbls
- reject based on subject line
- reject based on content-type
( didnt like html-based emails .. all gone now )
- personal emails vs business emails probably require different levels of
anti-spam filters
personal stuff could do a "reject all except known friends"
and business emails would be "accept all emails and check/reject spams"
-- after spending the week or so playing with various antispam stuff...
- its still cheaper/faster in the long run to hit the "delete" key
( esp if a ready-to-go solution is not ready for ya )
have fun
alvin
http://www.Linux-Sec.net/Mail/antispam.gwif.html .. anti-spam sendmail.m4 ..
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