On Fri, Sep 15, 2017 at 06:37:09PM +0000, Rosenbaum, Larry M. wrote:
> > From: owner-postfix-us...@postfix.org [mailto:owner-postfix-
> > us...@postfix.org] On Behalf Of Viktor Dukhovni
> ...
> >
> > A less invasive change is:
> >
> > # postconf -e "master_service_disable = inet"
> > # postfix reload
> >
> > Because this disables the inet services, rather than attempts to
> > change the underlying sockets, it does not require a restart, and
> > the queue manager and outbound deliveries continue without
> > interruption.
Fulll disclosure, the outbound smtp(8) agents complete current
deliveries and restart, while the queue manager also restarts
gracefully, but there is some churn of mail from active -> incoming ->
active again.
> Excellent, thanks!
>
> Is there a way to copy the deferred queue from the old server to the new one?
> (we have long queue-IDs enabled)
The simplest thing is to carefully set the "relayhost" of the old
server to the new, after making sure the new will accept outbound
relaying from the old. Then the queue drains quickly over SMTP.
Moving queue files is doable, but tricky.
--
Viktor.
