Possible bug in balsa, libesmtp, or MS exchange server

[Heber Farnsworth <farnsworth olin wustl edu>]

(The subject of this e-mail prompts the reflexive response that the MS
product must be the problem but before we pass judgement let's figure out
what we can.)

I use balsa in a network with an exchange server (not my fault) which
serves as my IMAP server and my SMTP server.  The SMTP part is the part
that bothers me at the moment.

When I send an e-mail with an address like farnsworth@olin.wustl.edu or
<farnsworth@olin.wustl.edu> the send goes just fine.  But if I try 

	Heber Farnsworth <farnsworth@olin.wustl.edu>

then I get a popup message that says "The data is invalid".  The mail still
goes through but I wonder where the message comes from.  I've mentioned the
message on this list before but no one could figure it out.  I've done a
bit more experimenting.  From the above you can see that the <> don't cause
the problem.  However a leading space or any text before the < will give
the message.  The only way to avoid the message is to enclose the name in
quotes as

	"Heber Farnsworth" <farnsworth@olin.wustl.edu>

Any ideas?

Heber