in reply to Retrieve an email address of sysadmin only knowing the IP address
Even without it fully working, you can just do a reverse lookup on the IP and get the official domain name back. Then do a whois.
There are some modules on CPAN to extract the emails and suchlike, but if you are working on the .com or .net domains, you will have troubles. Their format is screwed.
So now all you need is a bit of regex-fu to pick out any email addresses in the line following contacts. You wouldn't want to use this in an automated mode though, because there can be multiple contacts and your program won't know which one to contact.
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Jeremy
I didn't believe in evil until I dated it.
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