A sendmail milter to reject any commands from a host that HELO's as ylmf-pc, which is commonly seen as performing a dictionary attack on the SMTP server.

This was originally part of me playing around with the milter interface.

Author: David L. Cathey c/o Montagar Software, Inc. P.O.Box 260772 Plano, TX 750226-0772

Copyright (c) 2014, Montagar Software, Inc.

See COPYING for license information.

sendmail

./configure --prefix=/usr

Add a similar line to /etc/mail/sendmail.mc:

	INPUT_MAIL_FILTER(`milter-ylmf', `S=unix:/var/run/milter-ylmf.sock, T=S:30s;R:30s;E:5m')

Add the following file to /etc/init:

	milter-ylmf.conf

Rebuild sendmail.cf, and restart:

	make
	systemctl restart sendmail

This file will insure the milter is started before sendmail is started