rsync -av -e ssh /var/db 172.16.13.1:/home/fileadmin
building file list ... done
db/
db/Makefile
db/nscd/

sent 4730 bytes received 54 bytes 9568.00 bytes/sec
total size is 4588 speedup is 0.96


it runs...but why there is size difference in sent and total...

The total size is the size of the files transferred. Bytes sent are the total size of the files plus the information that rsync exchanges with the remote hosts (e.g. the file list, the timestamp of the files, etc.). You can see more detailed statistics using the option --stats.

ok thanks colucix you helped me alot...and thanks to other also..iam closing this thred it is solved...and publishing new post

above problem is solved in fileserver but in backup server i can't login through ssh
#ssh root@fileserver



@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:6
RSA host key for <ip address of fileserver> has changed and you have requested strict checking.
Host key verification failed.

Most likely this is due to a reinstallation/upgrade of the remote server, for which the system RSA key has changed. You have to edit the file ~/.ssh/known_hosts and delete the line containing the IP or the hostname of fileserver (see posts #7, #8, #19 and #20 above).

thanx...i renamed known_host file then login through ssh now iam able to login successfully...

@colucix kindly help me in solving other threads also.regarding mail server

I'm sorry but I have no experience of mail servers. Your thread will be bumped twice until nobody posts a reply. Let's see if someone step in within the next couple of days.