[Xymon] SMTP on multiple ports

Can xymon smtp test on multiple ports out of the box? And if so is there a way to see which port is being requested?

We've got a separate test defined in protocols.cfg and that works, but if the syntax were the same as for other network test, this should work also:

10.0.1.1 mailer.example.com # smtp smtp:8025

However I see only one test result with no port identified.

Maybe protocols.cfg is just the way to do it, but the docs imply that network tests can take a port as a parameter)