problem with rsync-daemon via ssh

[Carlos Carvalho]

I'm trying to transfer something to another machine launching a
once-only "daemon" through ssh with this command:

 rsync -avv -e "ssh -l user" ./orig/ machine::module/

where "module" is the name of a file in the home dir of user with the
following:

path = /path/to/home/transfer

The ssh connection works without passphrase. This is the error:

opening connection using: ssh -l user machine rsync --server --daemon .  (8 args)
rsync: did not see server greeting
rsync error: error starting client-server protocol (code 5) at main.c(1635) [sender=3.1.1pre1]

Am I doing something wrong?