Hi,

We have a internal relay configured in our setup.  The relay host had stopped accepting mails as the system was hanging and we could resolve
it only after about 8 hrs.  Meanwhile the queue built up and there
were about 80,000 mails in queue to relay to the relay host.  Once the
system was made up, mails started delivering to the relay host at a
very slow rate. It took almost 10 hours to clear the queue.

What I could understand by googling was, postfix detected the relay
host to be dead and due to the parameters like minimal_backoff_time
and maximal_backoff_time, the delivery rate to the relay host was slow. 

I am not sure, whether this understanding is correct. 

What is the correct way to come out of this situation and deliver the
mails faster after recovery of relay host.

Waiting for your valuable suggestions.
 Anant S Athavale
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