[expert] Stupid mail question

[Wayne Stout]

Greetings, everyone.

I'm sure this is a really stupid question, but here goes. If I want to use 
fetchmail/procmail for message retrieval and filtering, do I also have to 
use Sendmail or postfix? I want to keep using my isp's mail server for 
sending, but all the talk I've seen on various lists about procmail has got 
me curious and I'd like to give it a try...

TIA,

Wayne