Stan Hoeppner: > In this case it appears they've replaced the 500 5.5.2 unrecognized > command error with with a custom message: > 214 See http://www.messagelabs.com/support > Some of the Synacor systems do this as well, while others have > the standard Postfix return message.
Messagelabs replies with: 502 unimplemented (#5.5.1)
That looks like qmail to me. No other MTA that I know of implements
enhanced status codes by putting them as (#X.Y.Z) inside free text.
Wietse
