Scary Stuff

I got an email from my ISP that said the following:

Code:

We've received the following complaint in regards to your account.  It
indicates that one or more computers using the address space assigned 
to your account are infected by a worm or virus, or that a server in
your IP space may have become rooted. 

Such infections not only affect the performance of your computer, but
often use network resources to spread infection to other computers via
email. Other infections will allow your computer to participate in a
botnet for malicious use. Usually denial of service attacks against
other websites or false websites to gain credit card and other personal
information. 
...

If you are running a server, please discuss this matter with your server
administrator or IT staff. Most rootkits will hide information such as
running processes and have been known to hide or completely alter system
logs to hide themselves.

Any way to check to see what the problem is?

Thanks.

 

I think that email is a hoax. Are you sure it's from ISP?

 

Yeah, it's legit. I called my ISP.

 

are you running a server?
if so, which email server program are you using?

 

Yes, I'm running a server set up according to the perfect setup. Postfix?

 

Have you tried rkhunter and chkrootkit?
http://www.howtoforge.com/faq/1_38_en.html

 

chkrootkit seemed to work fine.

rkhunter gave me the following at the end:

However, rkhunter also gave me the following:

and

 

Are you running this server on a LAN with other computers in it?
If so. Are you sure that the server is the problem? It could also be othe PC's in your LAN.

 

It's linked to the machine's IP address.