whou of you is using RSYNC?

I try to establish a backup precess for all our clients that have a Laptop.

In the first step every thing looks good. But there is something in that
process i do not like, or understand.

For example there is the file


Usualy i can use the --append-verify mode for sncronisation. Everytime this
file become larger the sync is working propperly even if the conection break
down and is reconected.

But if this file become smaler, because the use hase erase some E-Mails, the
File was not syncroniced again.

For this 2nd Problem the file become smaler i need an idea how to syncronize
this file....

I hope someone can help me.

Kind Regards
Jens Geier