%rules-dir%/spam.whitelist.rules

[Alex Neuman van der Hans]

I'd like to know if, like in:

From:   1.2.3.   yes # Whitelist everything that *begins with* 1.2.3. in 
its IP Address

one could:

From:   *.blableble.com     yes     # ... do the same with everything 
that reverse-resolves to something.blableble.com
or
From:   .blableble.com   yes # or this way...