--On Friday, October 31, 2003 3:27 PM -0600 Bob Apthorpe <[EMAIL PROTECTED]> wrote:
> You could track the IP addresses of systems sending you spam from your > mail logs, drop those into a sendmail access list, then reject (5xx) or > tempfail (4xx) those systems for an hour or so, and reject more > aggressively for repeat offenders. You'll probably want to bias this > against legitimate mail from those addresses so you don't blacklist a > lot of mail from a single spam. Track sender and recipient as well and tempfail any <sender/recipient/MTA> tuple you haven't seen before for some longish period (like an hour). This is called greylisting. The tempfail can be done before the data phase and forces the spammer to queue the mail. ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
