For example, I want to block the following incoming mail
Header Example:
Received: from server.spamfilter.biz ([185.42.173.108])
by legolas.linkglobe.com with esmtp (Exim 4.95)
(envelope-from <tanitim@xyzsafe.info.tr>)
id 1nTsWi-0002Yd-7y
for info@deneme.com;
Tue, 15 Mar...