Waht are y'alls thoughts on Wirehub as an RBL? I find it does a heck of a job.
It's catching all the stuff spamhaus lets slip through, espeically all the
viagra, HGH, and penis enlargement and mortgage stuff.
I'm pretty impressed with the Wirehub/Easynet DNSBL. Not anonymous, run by a major (in its market) ISP, and sane. A very good complement to the SBL, which really focuses on the fixed-location major spammers.
[snip of a long list of mostly geographic lists]
These are the RBL's I'm using (in this order)
I find it odd that you'd choose to refuse mail from people running a blacklist you use, but it's certainly our choice...
I find that using more than a handful of blacklists is generally unjustifiable. There is a cost involved, as the DNS resolutions take real time and are done serially. 45 resolutions per SMTP connection has to really clobber overall performance, although I suspect that it also causes a lot of timeouts by spam senders, whose software is generally less patient than normal MTA's.
The korea and china RBL's are also quite active, Brazil less so.
I manage that rather differently. I have much of the Korean and Chinese network space as well as a few South American ranges blocked by my router instead of allowing the connections to come in and bother the MTA at all. In the past week I've seen about 5000 attempts to send mail to my server from those ranges, all stopped at the router.
I particularly recommend that approach if you really positively know that you want no mail from a particular address range and see a lot of attempts, especially the ones that don't know how to take rejection. The ranges I reject from at the router mostly come out of addresses that simply ignore the 5xx responses from SIMS for RCPT and DATA, resulting in log messes.
-- Bill Cole [EMAIL PROTECTED]
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