> On Aug 26, 2017, at 9:06 AM, Tom Browder <[email protected]> wrote:
>
> I am fooling around with various configuration settings for my postfix
> installation and would like to be able to clean out all existing mail and the
> existing configuration.
This is poorly defined. What do you mean by "clean out all existing mail"?
As for returning to a stock configuration, that rather depends on how
Postfix was deployed on your system in the first place. If it is part
of an O/S package, that package may have reason to deploy a stock
configuration that differs from the postfix.org stock version.
> Is there any single command to do that? Or do I have to manually delete
> stuff.
The question is ill posed. The simplest thing is to install a fresh Postfix
on a similar system, and base your configuration on that.
> I want the system to (1) start with empty queues and (2) no knowledge of the
> previous configuration.
If by "clean queues" you mean to destroy undelivered email (not a
good idea generally), then
# postfix stop
# postsuper -d ALL
# dir=$(postconf -xh data_directory)
# echo "Examine carefully the content of $dir/ and remove Postfix
caches that are safe to remove"
> Is there any danger to the start-over method regarding external mail
> servers which may been senders of mail that wasn't initially received
> for some reason?
I don't understand this question?
> Is there any danger to the existing system if I do a start-over?
You might lose mail.
--
Viktor.
