[Macpartners] OS X Mail — Cannot send message using the server MIT (Exchange)

[Brian McAllister]

>>> On 1/27/2016 at 15:15:44 GMT, John-Elmer Canfield wrote:

  > Has this happened to anyone else, and is there a solution?

I've also had this problem.  I've found that the mail was usually sent
despite the error but not always.

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Brian McAllister                                   Senior Software Engineer
mcallister at mit.edu                                                Bates Lab
(617) 253-9537                                                Middleton, MA