Hi,
The new sendmail check_* rulesets are great for blocking connections
from banned sites, and for not accepting mail if say the "From" address
does not pass a DNS lookup.
I would also like to globally reject or bounce mail that has certain
header lines in it, perhaps using a global procmailrc file.
Specifically, I want to reject all mail that comes with a header line
like this:
X-mailer: Floodgate Pro 5.0
I would also like to scan the headers and block mail where any "Received:"
lines have any of the banned domains that I am also directly blocking with
sendmail.
Has anyone done something like this? Any problems?
-Mark
--
Mark G. Thomas (Mark(_at_)Misty(_dot_)com --
http://www.misty.com/misty/welcome.html)