Ralph Seichter via Postfix-users:
> * Viktor Dukhovni via Postfix-users:
>
> > https://www.postfix.org/postconf.5.html#defer_transports
>
> Indeed. In my backup scripts, I like to use something like the following
> (from memory only, beware of possible typos):
>
> postconf -e defer_transports=lmtp,local,virtual && postfix reload
>
> Now that I think of it again, I wonder if the reload command is even
> necessary?
Yes, because it is implemented in the queue manager which is a
long-running process.
If you use defer_transports to freeze mail deliveries, then some
messages may get close to the bounce_queue_lifetime, meaning that
Postfix will try to deliver them only once.
To avoid that, use "postsuper -r ALL" to create new queue files.
Wietse
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