Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
The APS Catalog has been deprecated and removed from all Plesk Obsidian versions. Applications already installed from the APS Catalog will continue working. However, Plesk will no longer provide support for APS applications.
Please be aware: with the Plesk Obsidian 18.0.78 release, the support for the ngx_pagespeed.so module will be deprecated and removed from the sw-nginx package.
How are your "local" users sending email? If they are using SMTP on port 25 then there's no way I can think of to stop a user sending email to a mailbox on the server without also stopping external email from being delivered.
You could prevent this by switching to an external mailserver, I suppose, and the blocking port 25 from all but the external mailserver's IP.
Maybe if you could let us know why you want to do this -- maybe there's some other way around your problem?
I can send email by telnet on port 25 but only from local user to local user.
I found one workaround of this problem by set sender check by hash (in main.cf) and configuring for local domain "permit_sasl_authenticated, reject".
IMHO it should be possible in plesk.