Re: [Assp-user] SPF is useless this days (MAIL FROM not From)

[<kr...@gm...>]

Is there is any other way to block spam that has my own local domains
in From header but comming from unknown to me (not whitelisted by me)
IPs? dkim is a bit of overkill on compute power and especialy if you
can't actualy sign all outgoing messages due to some software
limitations - but you still could have know all IP adresses that send
such mail, with such domains in From header.