Description:

* Fixed: lmtpd generated a new session id after LHLO response
* Adds lmtp `TRACE` capability and `TRACE trace-id` command.  The supplied
  trace-id will be included in all log lines related to this delivery, until
  the next `RSET`.


Documentation:

None


Config changes:

None


Upgrade instructions:

Nothing required.


GitHub issue:

None
