Re: Is changing "Hostname" mandatory?

[Richard]

> Date: Wednesday, October 21, 2020 05:26:38 +0000
> From: Jason Long <hack3r...@yahoo.com>
>
> For configuration Postfix, is changing "hostname" to something like
> "Mail.example.net" mandatory? For example, my server running Apache
> and I don't like to change its name.

No, but the forward and reverse DNS records need to match.

>From a security perspective, I would run these services under
different VMs.