parsing mutt's alias file

Hi all,

I've built my own spam filters (I don't like the hands-off approach of
the spam bouncer) but want to not filter friends.  Rather than
hard-code it, I'd like to parse my mutt aliases file (of the form)

alias Alias   Firstname Lastname   <email(_at_)domain(_dot_)com>

How should I go about checking the From: field, verifying that the
sender is not a friend?

I could just grep it, but I think that's not so elegant (and could
return false positives).

thanks,

cory

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