David Stone wrote:
I recently had a spam sneak through filters with the following
header:
From: mailer_daemon151(_at_)yahoo(_dot_)com
First appearances are that this was identified by the FROM_MAILER
"macro" in procmail v3.11pre7 Is this possible? I had thought
that this macro _wouldn't_ match on mailer addresses that included
numbers in the userid?
Not the case. Look at the expression in the man page for procmailrc.
Everywhere 0-9 appears it's with a-z as well. Hence, there's nothing
special about numbers with respect to FROM_MAILER.
Cheers,
Stan