Author: Peet Grobler Date: To: exim-users Subject: [exim] Verifying rcpt exists before greylisting
New to the list - just subscribed. I need some serious advice.
We're running exim4-daemon-heavy on debian, v4.63-17. Recently we've
been on the receiving end of botnet attacks against exim. I want to make
some changes but I don't seem to be able to make sense of the spec, of
I'm simply doing things wrong.
In the acl_check_rcpt ACL, I'd like to deny any incoming message that is
sent to an unknown user on our domain. Now, we do virtual-exim hosting,
we're running a couple of domains, each with a file called
/etc/virtual/$domain. The file contains entries such as:
Is there any way to do this? How would I go about doing it? I've tried
with "!verify = recipient", but turns out this just denies *all* mail
sent to the box.
Your help would be greatly appreciated. Thanks in advance.
If I supplied too little information please do let me know.