Nick Fisher wrote:
Unless you are proposing to move all spam/virus/malware checks into the MTA to be used during incomming SMTP sessions, this is a problem you are always going to have. There is nothing stoppping the MTA from checking the headers and bouncing during a SMTP session (though it does require a peek in the headers), but unlike SPF it isn't required.
This is what I and many others do using Exim and either Exiscan or SA-Exim. I believe the Postfix people are also working on integrating this into their next release. It's really the best way to bounce mail, particularly with all the address forging going on.
Steven -- Steven Dickenson <[EMAIL PROTECTED]> http://www.mrchuckles.net
