Drew Mazurek:
> Is it possible to configure different deferred mail delivery settings based
> on the domain the message is going to?
No. One message can have more than one recipient, and the Postfix
scheduler does not know the destinations of a message until it reads
the file and resolves the destination. Postfix would waste a huge
amount of work to find out if a message should be delivered or not.
> However, for messages being relayed to our internal application,
> we require a minimal delay between failed message delivery attempts.
> (On the order of 15 seconds.)
If your requirements for different mail streams are so different,
consider using separate MTAs for the inbound and outbound mail
streams. This not a lame suggestion: there are lots of sites that
separate their mail streams. It simplifies configuration, queue
management, filtering policies, digital signing and signature
verification, and so on.
Wietse
