rsync throwing odd error

Wojciech Puchar wojtek at
Fri Nov 21 15:21:40 PST 2008

> /usr/local/bin/rsync -az -e 'ssh ' data.cdb 
> admin at
> channel 1: open failed: administratively prohibited: open failed
> The rsync does work. That is, the file is copied over. So this is actually a 
> warning, I guess.
> On the other server, the one the file is being copied TO, the following is 
> printed in /var/log/auth.log
> Nov 21 12:43:38 qu sshd[4604]: Address maps to, 
> but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!

well it's as easy as reading messages.

you exactly posted answer to your question!

make your reverse DNS and forward DNS match.

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