On Wed, 2008-03-26 at 05:12 -0700, Craig White wrote: > My first 'defense' is greylisting, run as a policy in postfix. Though do so with the knowledge that it may mean some mail never gets delivered/accepted. Greylisting, for both cases of rejecting spam and accepting ham, requires the services sending to you to work in certain way [1], and they don't all do that [2]. 1. They reject the initial attempt, tell the sender to resend later, and accept the resend. 2. Some senders never resend, causing mail to get lost permanently. Some resends come from a different server, and that can get rejected, too - causing long delays, or permanently lost mail. Some resend attempts come after a very long delay, which can be annoying or business destroying, or can cause another reject. I've experienced all of the above bad scenarios. -- Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.