When comparing the envelope sender to the from and reply-to headers, the sender header should also be considered.
As noted, envelope sender and from will always differ for mailing list distributions, but even this list sets the sender header properly. There's also the optional resent-from and resent-sender headers to check. Why not also check the depreciated errors-to header as well! Remember that reply-to is supposed to be used specifically when it differs from the from header. I would suggest scoring positive points (towards spam) if they were IDENTICAL (as such implies that the message generator doesn't understand what it's doing or the purpose of reply-to). Doing stupid things often implies spamminess. _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
