In the preferences there is a filters tab where you can set up patterns for files to be skipped while scanning.
Clamwin is installed with a list of 8 patterns.
Why exclude the files matching these patterns from being scanned?
Is it general knowledge that these file types cannot be infected?
Kevin

any file can be infected. However only executable files can load a virus into computer memory. The file extensions excluded by default in clamwin are not executable.

.evt, .dat and .log extensions among others belong to windows registry and event log and can't be scanned as files.

all other excluded extensions are mailboxes in different email clients, clamwin would remove/quarantine the whole mailbox if a virus is found in a single email, therefore these file types are excluded.

All of the excluded filetypes are not executable and a virus would not be loaded if you double click on such infected file.

Thanks for the thorough explanantion.