All:

I'm still looking for comments from you guys.
Since I haven't gotten any feedback, I thought that I'd let you know how
I'm doing.

The autowhitelist system (that I posted last time) has been in place for
a little over a week. It has tagged about 800 pieces of spam in that
time. My mail account has become usable again.

Over the course of that week, I've been making minor bugfixes and
refinements to improve end-user usability, and I've subscribed to a few
mailing lists to determine how well the system will work w/ them.

So far my biggest problem is with certain mail systems that specify no
return path. (on daemon messages from accounts like postmaster)
Sendmail/Procmail makes these messages appear as if they were sent from
the sendmail machine on which they are locally delivered. As such, all
of this mail remains untagged and gets delivered to the end user.
I have found no SPAM which is taking advantage of this "feature" of
sendmail, so the whitelist system is working very well at the moment.

I'm hoping to think of a decent method of filtering mail that has no
return-path. I'll probably end up checking to see if the From field says
"postmaster", and ditch it otherwise.

-Bill

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