Merge remote-tracking branch 'origin/master'

* origin/master:
  Add 'Sender address rejected: Domain not found' Postfix failregex

ChangeLog

@@ -27,6 +27,7 @@ ver. 0.9.4 (2015/XX/XXX) - wanna-be-released
    * Fixed `fail2ban-regex` stops working on invalid (wrong encoded) character
      for python version < 3.x (gh-1248)
    * Use postfix_log logpath for postfix-rbl jail
+   * filters.d/postfix.conf - add 'Sender address rejected: Domain not found' failregex
 
 - New Features:
    * New interpolation feature for definition config readers - `<known/parameter>`

config/filter.d/postfix.conf

@@ -16,6 +16,7 @@ failregex = ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 554 5\.7
             ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 450 4\.7\.1 Client host rejected: cannot find your hostname, (\[\S*\]); from=<\S*> to=<\S+> proto=ESMTP helo=<\S*>$
             ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 450 4\.7\.1 : Helo command rejected: Host not found; from=<> to=<> proto=ESMTP helo= *$
             ^%(__prefix_line)sNOQUEUE: reject: VRFY from \S+\[<HOST>\]: 550 5\.1\.1 .*$
+            ^%(__prefix_line)sNOQUEUE: reject: RCPT from \S+\[<HOST>\]: 450 4\.1\.8 <\S*>: Sender address rejected: Domain not found; from=<\S*> to=<\S+> proto=ESMTP helo=<\S*>$
             ^%(__prefix_line)simproper command pipelining after \S+ from [^[]*\[<HOST>\]:?$
 
 ignoreregex = 

fail2ban/tests/files/logs/postfix

@@ -23,3 +23,6 @@ Dec 18 02:05:46 platypus postfix/smtpd[16349]: improper command pipelining after
 
 # failJSON: { "time": "2004-12-21T21:17:29", "match": true , "host": "93.184.216.34" }
 Dec 21 21:17:29 xxx postfix/smtpd[7150]: NOQUEUE: reject: RCPT from badserver.example.com[93.184.216.34]: 450 4.7.1 Client host rejected: cannot find your hostname, [93.184.216.34]; from=<badactor@example.com> to=<goodguy@example.com> proto=ESMTP helo=<badserver.example.com>
+
+# failJSON: { "time": "2004-11-22T22:33:44", "match": true , "host": "1.2.3.4" }
+Nov 22 22:33:44 xxx postfix/smtpd[11111]: NOQUEUE: reject: RCPT from 1-2-3-4.example.com[1.2.3.4]: 450 4.1.8 <some@nonexistant.tld>: Sender address rejected: Domain not found; from=<some@nonexistant.tld> to=<goodguy@example.com> proto=ESMTP helo=<1-2-3-4.example.com>