Submission/SMTP proxy server

[Daniel Miller]

Sorry if this seems elementary - but a question on 
implementation/usage/purpose of this.  My understanding is at this time 
the SMTP proxy server is only that - it does not implement any further 
functionality.  So its availability now is purely for testing purposes.  
Is that accurate?

I secondly assume that this intended for trusted clients only - so this 
is not intended for processing email submitted via port 25.

And thirdly - if a separate firewall/anti-spam/virus/authentication 
service is run outside of the MTA (like ASSP) then the Dovecot proxy 
should be inserted between that and the final MTA?

--
Daniel