Auteur: Jeremy Koch Datum: Aan: exim-users Onderwerp: [Exim] Rejecting forged local addresses
Hello,
First, thanks to everyone who helped make Exim possbile. It is a
wonderful MTA.
It seems the latest ugly trend in spamming is forging the sender address
so it appears as though the mail is originating in from the local
domain. Example: Mail is addressed to jjk@??? from
jjk@???.
What I need to do is check the senders domain against my list of local
domains. If a match is found check the senders IP against
host_accept_relay. If the senders domain is considered local and
senders IP matches host_accept_relay the message is accepted. Clear as
mud? To put it anther way - If the senders IP is not found in
host_accept_relay and the senders domain is local the message gets
rejected.
