[Mimedefang] Powerful anti-spam rule that never discards vali d e-mail

[local.mimedefang]

On Sun, 12 Jan 2003 01:06:51 -0000, dfs at roaringpenguin.com ("David F.
Skoll") wrote:

>Therefore, CanIt allows you to return a temporary-failure code at the
>MAIL FROM: phase for a sender you've never seen before.  (It keeps a
>database of all known MAIL FROM: senders, and tempfails new entries.)
>If you have many people at your site, you can keep a database of MAIL
>FROM: per RCPT TO:, and do the tempfail at the RCPT TO: phase.  (Your
>database may grow rather large in this case.)

Does the spam software always use the same envelope sender address? If
so then presumably only the first person to use that software would
see their mails tempfailed - second and subsequent users would benefit
from the envelope sender now being in the database.