its my understanding that the ip address should be listed only once in the hosts file with the multiple names following.
so instead of:
127.0.1.1 cyber01.mirrgae.nl cyber01
it should be
127.0.0.1 localhost cyber01.mirrgae.nl cyber01
or, if that typo on the 127 address is deliberate and you have both somehow on the go, then disregard this post (as it may be to do with an old bug with sockets/tcp). I would think having only the one 127 would remove your "unable to resolve" error.
perhaps disregard anyhow - it appears this is how Hardy sets it up by default with the two 127 addresses in hosts. I never noticed.