[EMAIL PROTECTED] (Martin Cooper) writes:
> OK - but unconditionally permitting null-return paths means that > spammers can drive a coach and horses through the hole it leaves. :-( that's how the proposal is optional. spammers who lie about their source/return addresses using nonexistent domain names are not the subject of http://www.vix.com/~vixie/mailfrom.txt; rather, i'm trying to address the issue of spammers who lie about _existing_ source/return domain names. -- Paul Vixie
