[Evolution] SMTP error: DATA response error Need RCPT (recipient)

[Yasunari Tosa <tosa nmr mgh harvard edu>]

I need help to make Evolution work.

Something changed that when I try to send email from Evolution, I get 
the error message now:

Error performing operation
DATA response error
Need RCPT(recipient)

I'm using the following setting:

SMTP
host: smtp.nmr.mgh.harvard.edu
Using SSL whenever possible.
With or without login or PLAIN user setting.

Netscape/Mozilla Mailer works fine with the same setting.

Can you clarify what is wrong with my setting or the setting the 
sysadmin can change?

Thank you.

Tosa
P.S.
I really liked Evolution.