I have an IMac and opened an email that may have been infected with a virus. How do I check my IMac for a possible virus?

You have an intel machine, PPC machine have a different archtecture. To see if you have been infected, use ClamXav to check.

You would be better posting this in the Lion forum.

https://discussions.apple.com/community/mac_os/mac_os_x_v10.7_lion?view=discussi ons

It's possible you email contained a virus, but unlikely. There haven't been any reports of email viruses effecting the mac.

My understanding is the Apple provides security updates for all malware including viruses.

There have been reports of a --

-- Phoney virus checking program

-- flash malware.

ppc -- Power PC. An older computer processor used by Apple. Last Mac shipped with PPC was in 2006.

I've read about two virus checking programs for the mac. One is clamav. The rest are either junk or malware.

http://www.clamav.net/lang/en/

Security update.

http://support.apple.com/kb/HT1222

I agree with you . I'd hold off on running an anti-virus program unless things get worse with malware.

Here is a good article on Security on Mac OS X.

https://discussions.apple.com/docs/DOC-2472

Here is a post about the flash malware.

https://discussions.apple.com/thread/3857036?tstart=0

Here are some words about a virus checker trojan:

https://discussions.apple.com/docs/DOC-3023

I noticed you are on 10.6 -- Snow leopard. A better forum would be:

https://discussions.apple.com/community/mac_os/mac_os_x_v10.6_snow_leopard?view= discussions

Here is a complete list of the forums.

https://discussions.apple.com/docs/DOC-2463

Robert