[Sshguard-users] sshguard error messages in auth.log

[Skully <sk...@ha...>]

I've recently installed sshguard and I've been watching my 'auth.log' file.
I see the following error messages from sshguard:



Mar 15 00:30:12 xxx sshguard[1547]: Blocking command failed. Exited: -1
Mar 15 00:42:05 xxx sshguard[1547]: Release command failed. Exited: -1

,,,

Mar 16 15:54:00 tigerwalk sshguard[1534]: While blocking blacklisted 
addresses, the firewall refused to block!

In addition to these three error messages I can see that the software is 
correctly blacklisting several IP addresses.  My question is what to do 
about the above errors?

My system is running the 'ufw' firewall but sshguard is configured to 
use iptables.

Thanks