Two of the great things I have gleaned from this list are:
1. Greylisting is reported to stop upwards of 80-90% of the spam from even coming in the door. The downside is the likely delays imposed on the rest of the mail, maybe in terms of hours.
2. Spammers seem to be attracted to secondary MXs.
This morning, in the shower (where many great ideas are born), it occurred to me that if one combined the two concepts, i.e. implement greylisting on (only) the secondary MX server, one might get all the benefits with no downside.
Have I missed something?
works well for me, I also have greylisting and (postfix) sender address verification on the secondary mx. I may start adding points in SA for email arriving through the secondary.
-- Robert Brooks, Network Manager, Cable & Wireless UK <[EMAIL PROTECTED]> http://hyperlink-interactive.co.uk/ Tel: +44 (0)20 7339 8600 Fax: +44 (0)20 7339 8601 - Help Microsoft stamp out piracy. Give Linux to a friend today! -
