> -----Original Message-----
> From: David [mailto:david@ols.es]
> you could also check the message body for a special header added
> by your mta and reject any bounce without that header, but at the
> end all methods have they own problems.
That probably won't work. Every MTA seems to have their own format for
bounce messages, so you end up trying to parse an unknown quantity. Some
don't even return the original message headers.