I have a Droplet with a domain/website hosted on it using LAMP. I want to add a webmail server, to be able to send e-mails through SMTP and receive e-mails to forward them to external IMAP clients.
I need to send e-mails for app/site notifications, I send e-mails through simple SMTP scripts. And I need to receive e-mails being sent to my firstname.lastname@example.org to then forward them to external IMAP clients.
I want to configure it with the minimum requirements, cause I want to have it in the same server where I host my site and I don’t want it to consume too much memory/cpu.
I’ve seen this Postfix steps (https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-on-ubuntu-20-04) but I don’t know if it’s what I need.
I also believe that I need to configure some DNS records, such as MX, SPF, DMARC and DKIM. But these are not mentioned on above link.
Thanks in advance.
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