About custom exclusion filtre

Hi all (and sorry for my bad english).

My question is:
I need to exclude some files and folders from antivirus scan.
These files are recognized as “malware” and Comomo send them in quarantine everytime i try to open them.
I want to add to the name of the files something like as “name.(x)” and set a filtre in order to exclude all the files/folders with “.(x)”

I think there is no other post about this.

I have read something about how to exclude the path to a single file, and I tried to modify the path in this way: “C:**.(x)” but it doesnt work.
Some suggest ?

PS: ehmm… how to se automatic email scan? 88)
Thank you