Exim, Dovecot, Named - Safe to permanently disable?

[beansbaxter]

In order to minimize brute force attempts and server resources, I want to disable unnecessary services from running.

DNS is being handled by Cloudflare, transaction emails by AWS, and email accounts by Google.

I want to permanently disable Exim, Dovecot, and DNS on the DirectAdmin server. Are there any unforeseen problems that I should be aware of?

I can manually disable Exim and Dovecot from within the Services section of the DA control panel. Is there a better way to permanently disable these services?

And is it safe to disable Named if Cloudflare is handling my DNS?

Running the latest CentOS 7.

Thanks in advance.

 

[k1l0b1t]

For named: yes, should work fine: https://help.directadmin.com/item.php?id=25

for exim/dovecot, I'm not sure. should be fine too, but not sure.