fakehermes is a small, lightweight fake SMTP
server. It's useful as a way to avoid spam by
configuring your domains to point their secondary
SMTP server to a fakehermes server. It will log
not only the email messages involved, but also how
they are trying to send email and whether they
should be considered spam or not. This information
can be used to "profile" the spammers that send
you spam and can allow you to configure or tune
other spam filters. It supports SPF and RBL
checking.
