Fallback Smarthost
Continuing with feature comparison, sendmail has a number of settings for relay-out hosts. One can configure a catch-all SMARTHOST, or try direct delivery first and when the attempt fails, pass the message to FALLBACK_MX.
In Sun MS I've only seen one daemon attribute so far, which is an exclusive smarthost. Is there anything like a fallback smarthost, or should that be configured as a number of processing channels (i.e. try direct delivery, if it fails reprocess to daemon-delivery channel). If so, can someone please post a working example? :)