[Mimedefang] Weird issue

[Joseph Brennan]

> Also, beware: Global variables can persist across different SMTP sessions.
> Make sure you empty out %Header each time in filter_begin.


I bet that's it. For exactly this reason I have a stanza at the
top of filter_begin that empties out per-message globals, or sets
them to default values, e.g.:

%Header = ( );


Joseph Brennan
Columbia University Information Technology