problem with hostnames and emails
recently acquired a Droplet. Discourse in the install.
And now I have problems, I want to ride an email service in the droplet.
In the installation tells me run: / etc / hostname.
but I tell you I do says “Permission denied”
(Yes, i use login by SSH Key)
Besides I think the system host and domain in cpanel digitalocean not used at all, try using dns mailGun but never checked.
Now, it is assumed that it must create hostname here?
or inside as a cname?
use the IP or an @?
All this did not see it anywhere in the installation documentation.
Please help me
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