First of all, Hi ! I'm new here and happy to be a part of this community.

About my server :

KVM Mashine
3.2.0-4-amd64 #1 SMP Debian 3.2.54-2 x86_64 GNU/Linux
wheezy

This may be a stupid question and meer ignorance from my part on how a SSH server works.

But on one of my Public ssh_host_rsa_key.pub is this email : LH22210@voxility.net
Why is that?

could it have been generated at the installation ?

Welcome, hope you like it here.


0) First of all if you enabled root access over the network (SSH or something else) disable it now. Root should not login over networks.
1) you should know (and tell us?..) if you rent a server at that provider and if your host name resembles the email address in the key (or whatever you edited to be).
2) generating a key generally requires one to enter a pass phrase at the command prompt so this is not something you would miss.
3) if you run 'stat' on both files its modification time should tell you if this was created around installation time.
In the event something is amiss I suggest you start checking access records (last, lastlog), system and daemon logs in /var/log, user shell history and verify system integrity.

Hi,

thank you for your response.

0) root login disabled!
1) I rented the server throught Ixam-hosting, an England based hosting company with servers in Romania. Voxility is a company that offers IaaS services and is also based in Romania. So that could be the link.
2) I did not generate the key.
3) Mod time is 24.03.14, so arround the time of my email from the hoster with the access credentials.

It makes sense.

Thank you very much for the help.

Unless your provider mandates access that way it makes sense to remove or at least disable the key.