Description of problem:
I've seen this problem with Evolution v2.0 - 2.5.90.
When running Evolution for the first time and running through the wizard to
create an IMAP + SMTP email account I choose to use SMTP Authentication.
Specifically I choose:
Server Requires Authentication [x]
Use Secure Connection: Whenever Possible
Authentication Type: PLAIN
After the wizard finishes and I download my INBOX email fine, I try to send an
email and it fails. When open up the configuration tab for "Sending Email", the
Server Requires Authentication 
Setting is unchecked. That is the bug.
Evolution is "forgetting" that I set that option in the initial wizard.
If I toggle it back on, it stays remembered.
Version-Release number of selected component (if applicable):
Evolution v2.0 through at least 2.5.90
Thanks for filing this bug report, and investigating it. I'm sorry that it has
gone for so long without activity; it was incorrectly assigned to me by bugzilla.
Reassigning to mbarnes; once again, my apologies for my lack of activity on this
Is this still an issue?