On Saturday, August 14, 2004, 1:52:26 PM, Rob McEwen wrote:
if my initial conclusions are true, there would then be a strong argument for "holding" sbl-xbl.spamhaus.org blocked mail and giving it a "second try" some hours later.
An interesting idea if your observation is correct. I've not seen it for my self, but I have not looked either.
Rather than rejecting at the MTA level you could take the messages into SpamAssassin and make sbl-xbl simply another test, but at a much higher processing cost of course.
The key really should be to get spamhaus to improve the quality of their data. If they are "list first, ask questions later" in a few cases, then they should perhaps reconsider their policies.
This is really a more appropriate topic for a general anti-spam discussion, but I've manually forwarded our comments to Larry at Spamhaus.
Jeff C.