Instead, I found that of the 2406 IPs extracted (not counting the IP of my backup server), 2238 were unique. It is very much a moving target.
Most spam is now coing via open proxies (not open relays). A dialups rbl, at least, seems required anymore for bloacking spam.
Do YOU have a backup mail server
Not any more, almost 80% of my spam was coming from it, so I went backupless
and is it under your control, or do you rely on someone else? (I have a reciprocal DNS, MX arrangement with another fellow and it has worked well, but seems to need more stringent anti-spam measures.)
Mark hartman and I did the reciprocal thing for a long time and it worked very well. Spammers have gotten sneakier though.
At this point, I've asked the fellow doing backup for my mail to toughen up his RBL server list. I think I'll also add a lower-priority MX record for my primary server as well and see what effect this has. For those of you who have done this, did you measure the effect it had?
None at all. Seems the spammers ignore any backups that resolve to teh same IP as the primary.
--
Do you believe that there's someone up above, and does he have a timetable directing acts of love?
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