skxmail is a simple package which is designed to accept mail sent by programs which execute /usr/sbin/sendmail and "deliver" it locally, into a hierarchy of maildir directories.
It is intended to be installed upon Debian Lenny systems which don't really need the ability to route outgoing emails, but at the same time have packages installed which require an MTA to be present.
In the Debian Lenny archive there are several MTAs which will accept mail, either locally or via the network, and spool them to remote systems. But nothing simple that will just read a message from STDIN and stash it away somewhere predictable - hence this software being born.
The name? I want to be famous.