Legality of Posting Received E-Mail to Netnews?

[Dave Brillhart]

Recently we had a minor Notes (similar to Netnews - general access
to postings but limited to our company) war. A manager responded
to one of the parties involved via direct E-Mail. This party posted the
E-Mail message to the "world" and followed it with comments about it's
patronizing tone...

Besides the obvious ethical problems,  are there any legal ramifications
to this action?

-- Dave Brillhart
     Harris Semiconductor