It appears that some spammer has hacked into my mail server

Question

and is attempting to inject spam into my email correspondence - I have examined the source code of the attempts and pinpointed the hackers address and own website - I wish to report this t**t but am unable to locate the 'abuse' address of the server concerned - any recommendations welcome?

Answer 1

run whois on the ip, find which ISP owns the ip block and report to them.