I am getting mails daily from different mail address like
firstname.lastname@example.org etc. Since the mail IDs change daily, I can't filter those mails.
I checked the emails’ origin.
X-Received: by 10.224.75.69 with SMTP id x5mr811082qaj.39.1381914914355; Wed, 16 Oct 2013 02:15:14 -0700 (PDT) Return-Path: <email@example.com> Received: from server.rupyen.info (server.rupyen.info. [22.214.171.124]) by mx.google.com with ESMTPS id c11si34872774qey.80.19126.96.36.199.00.00 (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 16 Oct 2013 02:15:14 -0700 (PDT) Received-SPF: neutral (google.com: 188.8.131.52 is neither permitted nor denied by domain of firstname.lastname@example.org) client-ip=184.108.40.206;
I found that for every mail, the mail server is the same:
How can I block/filter these mails?