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Block entire Top Level Domains in Email Protection : Anti-spam ?

I am getting an enormous amount of spam in user quarantines from a seemingly made up TLD. I used to get .xyz and now I get .science.

Of my 10680 mails in quarrintine, 4455 are from a .science domain

I would love it if someone would tell me how to block these since that are all junk.

I tried 
*@*.science
 under Email Protection : Anti-spam : Sender blacklist but it does not work.

It looks like each SPAM campaign has a different IP, domain, and sub-domain so the TLD is the only common factor. These never get caught by rDNS or RBLs and I would like to see them gone.

Here are some sample headers: 

Received: from prescout.quinter.science ([66.248.193.188]:49960) by 7552-5.UTM-server.com with esmtp (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1YzYdc-0005Qn-0p for mic@mydomain.com; Mon, 01 Jun 2015 18:56:56 -0400
Received: from 0035201d.prescout.quinter.science ([127.0.0.1]:4011 helo=prescout.quinter.science) by prescout.quinter.science with ESMTP id 00GP3520VA1D; for ; Mon, 1 Jun 2015 15:56:55 -0700
X-CTCH-RefID: str=0001.0A020203.556CE338.00C9,ss=3,re=0.000,recu=0.000,reip=0.000,cl=3,cld=1,fgs=0
Date: Mon, 1 Jun 2015 15:56:55 -0700
To: 
Message-ID: 

Received: from 2rqun09wm.lovechristian.science ([198.52.177.235]:50587) by 7552-5.UTM-server.com with esmtp (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1YzYS4-0004vz-0R for connie@mydomain.com; Mon, 01 Jun 2015 18:45:00 -0400
Received: from 00de1d46.2rqun09wm.lovechristian.science (amavisd, port 6523) by 2rqun09wm.lovechristian.science with ESMTP id 00PPATYDE1DVNNNY46; for ; Mon, 1 Jun 2015 15:44:56 -0700
X-CTCH-RefID: str=0001.0A020202.556CE038.0081,ss=3,sh,re=0.000,recu=0.000,reip=0.000,cl=3,cld=1,fgs=0
Message-ID: 
Envelope-to: connie@mydomain.com
Date: Mon, 1 Jun 2015 15:44:56 -0700
From: "ONLINE-DATING" 
Subject: ARE YOU-SINGLE?- CONSIDER THIS..
To: 
Content-Language: en-us


Will a REGEX work?

If so, can someone please post one?

Thanks.


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Parents
  • Thanks Billybob,

    Hopefully Bob will chime in on your solution since I don't believe his first suggestion worked, although his suggestion of turning on "Strict rDNS Checks" did reduce the amount of SPAM that did get through without any negative consequences so far so that is a plus.

    THG

    Best Regards - HTG
    Frustrated Sophos Partner seeing all the things
    that brought me to Sophos slowly slip away.
    RIP astaro.org

Reply
  • Thanks Billybob,

    Hopefully Bob will chime in on your solution since I don't believe his first suggestion worked, although his suggestion of turning on "Strict rDNS Checks" did reduce the amount of SPAM that did get through without any negative consequences so far so that is a plus.

    THG

    Best Regards - HTG
    Frustrated Sophos Partner seeing all the things
    that brought me to Sophos slowly slip away.
    RIP astaro.org

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