On 2023-09-08, Robert Senger wrote:

> I am running roundcube and dovecot on the same machine. To avoid the
> described scenario, I have:
>
> 1. Enabled and configured selinux on that machine,

yes selinux is a must have

> 2. Enabled mail-crypt plugin with user keys in dovecot.
>
> This should make it hard for an attacker to get access to the emails
> even with root access gained through a compromised web server.

mail-crypt is useful if attacker get access to the mails but not to
the keys. If you store mails on the same system it's useless
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