[Asterisk-Users] unknown host cvs.digium.com

[Andrea Bencini]

I have Digium IAXy 101I.
To provision the IAXy, I am following the instrution to download the
utility (iaxyprov package):
on my linux server (asterisk) I type

#cd /usr/src
and 
#export CVSROOT=:pserver:anoncvs at cvs.digium.com:/usr/cvsroot
then
#cvs login (with password anoncvs)

but after typing the password (anoncvs) I receive this messages

Unknown host cvs.digium.com

Can you help me
thank
Andrea