John Hardin wrote:
Do you greylist?
Not currently. I'm not sure it's a useful option for a core ISP mail system, either; a LOT of the more vocal customers are the ones who expect email email to approximate instant messaging... :/
Do you use any MTA-level DNSBLs?
zen. But that doesn't work on all the domains we inherited that were set up with Postini filtering... :( (Although TBH I don't recall seeing any reported missed spam hitting the SA subrules for Zen either.)
-kgd
