Today’s Spambeating Trick Of The Day:

zcat ~/mail/sentArchive/* | grep "(^To|^CC)" | perl -e "while (<STDIN>){print /(w*@[w|.|-]*)/; print "n"}" | sort | uniq | xargs --replace -exec echo "whitelist_from {}" >> /home/aquarion/.spamassassin/user_prefs

Where it fails:
When there is more than one address on the To: line.

Why I don’t care:
I don’t often send mail to more than one person.