Merge pull request #64 from sourcejedi/remove_sshd_rdns

Misconfigured DNS should not ban *successful* ssh logins

Per our discussion indeed better (and still as "safe") to not punish users behind bad DNS

config/filter.d/sshd.conf

@@ -32,7 +32,6 @@ failregex = ^%(__prefix_line)s(?:error: PAM: )?Authentication failure for .* fro
             ^%(__prefix_line)sUser .+ from <HOST> not allowed because listed in DenyUsers\s*$
             ^%(__prefix_line)s(?:pam_unix\(sshd:auth\):\s)?authentication failure; logname=\S* uid=\S* euid=\S* tty=\S* ruser=\S* rhost=<HOST>(?:\s+user=.*)?\s*$
             ^%(__prefix_line)srefused connect from \S+ \(<HOST>\)\s*$
-            ^%(__prefix_line)sAddress <HOST> .* POSSIBLE BREAK-IN ATTEMPT!*\s*$
             ^%(__prefix_line)sUser .+ from <HOST> not allowed because none of user's groups are listed in AllowGroups\s*$
 
 # Option:  ignoreregex