How to set up your own SMTP server?

Question

linux

Hello!
I want to set up an SMTP server to send emails to subscribers. I found a bunch of different recipes on the Internet on this topic, my head is spinning.
Point out these points:

1. What are the minimum server specifications? (want to use ubuntu, sending up to 10,000 messages per day per day)
   
2. I found a lot of mail servers (iRedMail etc.) which one is best for beginners? (I need to eventually be able to bind multiple domain names and use SPF, DKIM, Dmarc)
   
3. Can a site be tied to one server, and the mail of this site be on another? If so, is it to be registered with the registrar or do you need to do some kind of routing?
   

Thanks in advance!

Answer 1

1. 10,000 per day is not much. any one on which ubuntu will stand is enough
2. yes, everything is the same. what documentation you study, then take it.
3. naturally. in DNS. to receive mail, you prescribe MX, to send, in theory, nothing, but better than SPF, DKIM. and for the site you have A records.
4. you will immediately get into all sorts of blacklists + large providers will immediately ban you.

Answer 2

There is one point. If you are going to organize an SMTP server in the office, then I can recommend asking the provider to register a PTR record in the DNS, this is a reverse zone in other words. Add spf, DKIM, DMARC, MX records and that's it. Further, the setting is according to the Talmuds, but getting into spam is NOT THAT THREATENING for you.

Answer 3

There are individual, already configured correctly, ready to work and administered mail servers, incl. with support in questions of delivery of bulk mail. For example, mailout.ru
Individual separate domain(s) and clean ip-address. Support for your domain. Reputable servers are also possible.