How to verify mail?

Question

Network administration

Hello! Can you please tell me where to add the dns entry? The mailer itself is located locally on isp manager

Answer 1

To begin with, a normal mail server, which is planned to be used not only as a local relay, but also for incoming mail, must have a public FQDN. In this public DNS zone, you need to add the entry.

Answer 2

Open the control panel of your DNS zone, prescribe an A record, ask the provider to file a PTR record under your external IP.
https://interface31.ru/tech_it/2010/10/pochtovyj-s...
Your question regarding "how do I set up a mail server" covers a fairly extensive theory, no one will write it to you in one article.
a) raise the MTA, set up mailboxes, set up delivery b) set up DNS c) set up antivirus + antispam I
recommend hiring a professional for one-time work, or use public services as suggested above. Many bosses want cheap, even on their knees, but then they will ask for more and more. Don't mind your own business.

Answer 3

if you really want your own server - take iredmail and install it...