How to configure sendmail to only allow outgoing mail to a specific domain name?

Solution Verified - Updated 2024-08-06T07:40:38+00:00 -

Issue

How to configure sendmail to only allow outgoing mail to a specific domain name? Users should be allowed to send emails addressed to any user at example.com but emails addressed to any other domain should be discarded.

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)