How to setup properly a email server on Ubuntu with postfix, dovecot and opendkim

After checking dozens of blog posts to know how to setup my own mail server on ubuntu, I have been able to create a server that sends mail to any mail provider and those doesn’t get to the SPAM folder!! Here’s how I did it

In case this doesn’t work for you, just write to me and I will help you, has been a long since I configure it and maybe something it is in the wind. So I will make this post better and help you so, win win.

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