[Dovecot] backup using rsync

[Ed W]

Scott Murman wrote:
> i'm trying to backup the dovecot Maildir files over a cifs share.   
> source is a debian build, share is a readynas.   i've been getting 
> rsync: mkstemp 'filename goes here' failed: Not a directory (20) 
> errors.   rsync is v3.0.   i believe this is related to the dovecot 
> file naming convention that includes characters such as ':' in the 
> filename.   anyone else seeing similar behavior?  a workaround?   i 
> can go to different backup strategies, but rsync is cheap and 
> effective for my needs.  thanks,
>

Is backup over ssh an option?

Alternatively could you run an rsync server at one end or the other 
(which then also avoids using cifs in the middle)?

Ed W