Mark Goodge: > > I've seen no evidence that this interpretation is correct. On what > > basis do you assert that this is Yahoo's policy? > > Experience, mostly. I've found that ceasing retry attempts for four > hours, then restarting, typically results in the queue clearing as fast > as you can send the emails without any further errors being generated.
This could be automated outside of Postfix by tailing the maillog file and updating the defer_transports setting (see Victor's post). It requires a "postfix reload" command to restart the queue manager. Wietse