Add SMTPVerbFilter hook
Export State variable
Configurable require auth
Fix close bug
Fix session close bug
Merge branch 'master' into mta
Fix tests
Fix tests
Export Data variable
Add delivery backend
Support SMTP and Submission ports
Make servers more configurable
Make server and config available to session
Use policy set to determine auth requirement
Move backend config around
Add resolver service and maximum recipient policy
Move maximum recipients to policy set
Remove identity implementation
Implement UserIdentity in local backend implementation
Fix authentication bug