Send Password with RSYNC_PASSWORD ore --password-file

[Manfred Gnaedig]

Hallo,
i am verry sorry about my bad engllish.
But i trie my best...

I trie to setup an Backupserver.
If i use this
rsync -varpog -e ssh /home/www/web6 217.172.xxx.xxx:/home/www/web6
the Server is asking me fore Password.

If i use this
rsync -varpog -e ssh --stats /home/www/web6
217.172.xxx.xxx:/home/www/web6 --password-file=host1.pwd
the Server is asking me too fore Passwort.

How i can bring the Passwort to the Server automaticly?
What i have tu use?
What can i do?

Ore is it better to use RSYNC_PASSWORD ?
But how can i use this?

Thank you verry mutch fore everything.
Best Wishes from Düsseldorf
Your
Manfred Gnädig