Funky rsync problem...

I am running Lion on a mac book pro. I have a mac mini running Lion and some Fedora boxen.

On the mac book pro my daily.local file contains:

#!/bin/sh
# sync wiki data with server
/usr/local/bin/pullFromServer

export HOME=/var/root
/usr/bin/printenv
/usr/bin/mail -s "Daily Cron Job" jerry <<DOC
 Daily Cron ran on `/bin/date`
DOC

pullFromServer contains:

[mbp:~]$ cat /usr/local/bin/pullFromServer
#!/bin/sh
# Must be run as root we will copy the data directory
# from server to mbp
/usr/bin/rsync -auvgo server::macwiki /usr/local/share/moin/mywiki/data
[mbp:~]$ 

I am copying the moin data directory from my 'server' back to the mbp. 
( A crude sync ).

If I run pullFromServer ( as root ) the data gets pulled back to my mac book pro.

When run from the cron job I find in the daily.log file:
*******
rsync: failed to connect to server: No route to host (65)
rsync error: error in socket IO (code 10) at /SourceCache/rsync/rsync-42/rsync/clientserver.c(105) [receiver=2.6.9]
********
I am running a local name server on the server and in addition there is an entry for the server
in the hosts file on the macbook pro.

I am running almost the same code on the Fedora boxes and they connect ok…

Why is rsync failing when run from cron?

Thanks for any insights…

Jerry