[Mimedefang] Messages spooled by secondary MX miss Mimedefang?

[Whit Blauvelt]

Hi,

A few messages have got through without any check by MD/SA. These are all
messages that went to the spool on an external secondary MX before arriving.
What is it about a message taking this route that would allow it to slip in
unchecked? All of these happened to be obvious spam. The MD and SA headers
that are added to all mail by the local configuration were just not there.

Thanks,
Whit