Gregorio wrote:
> I am attempting to run postfix 2.2.10 on a Linux 9 system.
>
> When I start postfix it fails. The error log says I have an error:
>
>
> master[8480] ......0.0.0.0 post 25 is already in use.
>
>
> Any is greatly appreciated.

That mains some process is already listening on the network SMTP port 25.

My guess would be that the "sendmail" package or some otther mail package is also installed and
running. If so, you'll have to disable it to be able run the Postfix package.

--
Greg