Dave,
I don't think that you can score Zen too high. I'd bump Zen up to the
highest score and see what happens. If a legit e-mail were to get
blocked by Zen, you'd be able to tell your mail hosting client that the
sender is listed on such a world-famous and reliable blacklist that this
incoming message would also have been blocked by 95+% of all spam
filters in the world.
I'd also bump up the score for SpamCop... perhaps also to the maximum.
(BTW - Because I do so much research. and run a DNSBL, I don't
personally score any list that high... but my situation is vastly
different... which is why I don't use my own advice here.)
Also, you mentioned a concern about how this would effect your own users...
I don't see how blocking more spam via increased points for SpamCop and
Zen could possibly effect your user's ability to use your services.
Of course, be sure that...
(1) these DNSBLs should ONLY be testing against the sending IP of each
incoming message... NOT every IP found in the header. As long as you are
checking against the Sender's IP, then you should be OK.
(2) You should also NOT be checking the sending IPs of
SMTP-authenticated e-mail... that being e-mail sent by your own users.
Follow those two guidelines and you should be OK.
If you move SpamCop and Zen to the max scores, but STILL see spam listed
on Zen and SpamCop, then you'll at least know that you have some sort of
malfunction (perhaps DNS related?) that pushing a button or lever on
your Spam Filter's control panel alone probably won't fix.
If that is the case, you should probably seek help from one of the
following: Your hosting provider (if not you), the company that makes
SmarterMail, or some kind of discussion forum specifically about
SmarterMail.
It looks to me like you have some kind of DNS malfunction...or
SmarterMail malfunction.
Rob McEwen
[EMAIL PROTECTED]
