The Swiss Army Knife for server-side e-mail rules in the UNIX world.
# DUPLICATE REMOVAL # This rule uses formail to remove emails that have a message-id that has # already passed through the system. It keeps an 8K log. "W" waits until it # gets the exit code from formail and filters if appropriate. the 'h' means # pipe the headers only. it uses a user-defined lockfile for this task. :0 Wh: msgid.lock | $FORMAIL -D 8192 $HOME/.msgid.cache
- Using Procmail to filter mail with Cyrus and Postfix - useful if you use the Cyrus IMAP server with fetchmail.