Dear fail2ban, valid ssh logins with broken reverse DNS are 'normal' / 2015-10-27

2015-10-27 Dear fail2ban, valid ssh logins with broken reverse DNS are 'normal'
I got locked out of my own server due to fail2ban triggering on:
sshd[12449]: Address aaa.bbb.ccc.ddd maps to something.example.com, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
sshd[12723]: Address aaa.bbb.ccc.ddd maps to something.example.com, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
sshd[12916]: Address aaa.bbb.ccc.ddd maps to something.example.com, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
That was just a few scp actions in short succession, and no reason to lock me out!

I updated /etc/fail2ban/filter.d/sshd.conf and removed this from the failregex:
^%(__prefix_line)sAddress  .* POSSIBLE BREAK-IN ATTEMPT!*\s*$

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