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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The regexp you provided should work in blocking any filename.tmp.exe. The attachments has to follow that exact naming pattern i.e. it must be *.tmp.exe. Any other
variation it will not match. This one should work too:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">(tmp){1,}.*(exe){1,}<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Indunil Jayasooriya [mailto:indunil75@gmail.com]
<br>
<b>Sent:</b> Thursday, March 17, 2016 4:25 AM<br>
<b>To:</b> Dino Edwards <dino.edwards@mydirectmail.net><br>
<b>Cc:</b> amavis-users@amavis.org<br>
<b>Subject:</b> Re: block a particular double extension files in amavisd.conf<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Thu, Mar 17, 2016 at 1:46 PM, Dino Edwards <<a href="mailto:dino.edwards@mydirectmail.net" target="_blank">dino.edwards@mydirectmail.net</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">While users surf the Internet? So, not coming through e-mail?</span><o:p></o:p></p>
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</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"> Your point is OK. But, I am afraid that an attacker sends emails to our domain with those attachment, I want my mail filer to block it.
<o:p></o:p></p>
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<p class="MsoNormal"> I want to take an action for it in the future<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">comments? <o:p></o:p></p>
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<p class="MsoNormal"><br>
<br>
, <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> amavis-users [mailto:<a href="mailto:amavis-users-bounces%2Bdino.edwards" target="_blank">amavis-users-bounces+dino.edwards</a>=<a href="mailto:mydirectmail.net@amavis.org" target="_blank">mydirectmail.net@amavis.org</a>]
<b>On Behalf Of </b>Indunil Jayasooriya<br>
<b>Sent:</b> Thursday, March 17, 2016 1:10 AM<br>
<b>To:</b> <a href="mailto:amavis-users@amavis.org" target="_blank">amavis-users@amavis.org</a><br>
<b>Subject:</b> block a particular double extension files in amavisd.conf</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Hi, <o:p>
</o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">I want to block files having double extensions. while users surf internet, some files such as<b> e7ea.tmp.exe</b> will be automatically downloaded.
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><br>
e7ea.tmp.exe is a ransomware. Attackers can send mails with files of these types as well.
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Now, I want to block files having double extension such as filenames<b>.tmp.exe</b> format.
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">I think below regex is OK to insert in to amavisd.conf file.
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><br>
<b>qr'.\.(tmp)\.exe$'i, </b> # block this double extension <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">any comment?
<o:p></o:p></p>
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-- <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">cat /etc/motd<br>
<br>
Thank you<br>
Indunil Jayasooriya <br>
<a href="http://www.theravadanet.net/" target="_blank">http://www.theravadanet.net/</a><br>
<a href="http://www.siyabas.lk/sinhala_how_to_install.html" target="_blank">http://www.siyabas.lk/sinhala_how_to_install.html</a> - Download Sinhala Fonts<o:p></o:p></p>
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-- <o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">cat /etc/motd<br>
<br>
Thank you<br>
Indunil Jayasooriya <br>
<a href="http://www.theravadanet.net/" target="_blank">http://www.theravadanet.net/</a><br>
<a href="http://www.siyabas.lk/sinhala_how_to_install.html" target="_blank">http://www.siyabas.lk/sinhala_how_to_install.html</a> - Download Sinhala Fonts<o:p></o:p></p>
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