Summary: Ref T13222. Ref T920. This is the last of the upstream adapter updates.
Test Plan:
- Sent mail with SES.
- Sent mail with "sendmail". I don't have sendmail actually configured to an upstream MTA so I'm not 100% sure this worked, but the `sendmail` binary didn't complain and almost all of the code is shared with SES, so I'm reasonably confident this actually works.
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13222, T920
Differential Revision: https://secure.phabricator.com/D19965
c3cafffed7