evolution-ews won't send emails
I have installed evolution-ews 3.2.3 built from source on ubuntu 12.04. I can connect to my Exchange server and retrieve emails fine, but when I try to send, I am getting the error
"The user account which was used to submit this request does not have the right to send mail on behalf of the specified sending account."
I have spent hours chasing the issue, and I think it could be because my email account on the MS Exchange server has capital letters in it (eg. JSmith(at)organisation.com.au). Evolution seems to change the address to lowercase before sending SOAP messages. Can anyone verify this behaviour?
Is there any way to fix it? could it be something else?