ConfigServer Community Forum

Posted: **25 Oct 2015, 12:51**

Hi Members,

Can someone help me to track down and block following behavior with custom regex?:

=================================
2015-10-25 12:47:50 H=(115-87-13-177.skybandalarga.com.br) [177.13.87.115]:21944 F=<fakeuser@domainname> rejected RCPT <fakeuser@domainname>: Sender verify failed
2015-10-25 12:47:51 H=(dynamic.vdc.vn) [113.162.223.170]:59451 sender verify fail for <fakeuser@domainname>:
2015-10-25 12:47:51 H=(dynamic.vdc.vn) [113.162.223.170]:59451 F=<fakeuser@domainname> rejected RCPT <fakeuser@domainname>: Sender verify failed
2015-10-25 12:47:53 H=([188.55.207.228]) [188.55.207.228]:29827 sender verify fail for <fakeuser@domainname>:
2015-10-25 12:47:53 H=([188.55.207.228]) [188.55.207.228]:29827 F=<fakeuser@domainname> rejected RCPT <fakeuser@domainname>: Sender verify failed
2015-10-25 12:47:56 H=177-66-137-33.clonix.srv.br [177.66.137.33]:10000 sender verify fail for <fakeuser@domainname>:
2015-10-25 12:47:56 H=177-66-137-33.clonix.srv.br [177.66.137.33]:10000 F=<fakeuser@domainname> rejected RCPT <fakeuser@domainname>: Sender verify failed
=================================

Posted: **28 Oct 2015, 09:35**

Here you go! https://regex101.com/r/uQ6wY0/2

Posted: **31 Oct 2015, 14:54**

thanks much appreciated. If you can create CSF rule for me I would be very grateful.

Posted: **01 Nov 2015, 12:33**

Here you go:

Code: Select all

if (($config{LF_SMTPAUTH}) and ($globlogs{SMTPAUTH_LOG}{$lgfile}) and ($line =~ /^(\S+|\S+\s+\d+\s+\S+) \S+ H=\S+ \[(\S+)\]:\d+? sender verify fail for <(\S+)>/)) {
        return ("Failed SENDER VERIFY from",$2,"sender_verify","5","25,587,465","864000");
}

It will block anyone with more than 5 matches for 1 day.

Posted: **10 Nov 2015, 11:46**

thank you marcele. you have been a wonderful help.

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