Quoting Greg Ward <gward@???>:
> Already tried this:
>
> acl_smtp_data = check_message
> [...]
> check_message:
> deny condition = ${if eq {$h_subject:}{REJECTME} {yes}{no}}
> message = well, you ASKED to be rejected!
> accept
>
> ...to no avail.
Just cut and pasted your acl and it works as you intended here during my
exim -bs tests:
======
MAIL FROM:<>
250 OK
RCPT TO:<postmaster>
250 Accepted
DATA
354 Enter message, ending with "." on a line by itself
Subject: REJECTME