Hi
I configurated smtp server as describe in https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-postfix-as-a-send-only-smtp-server-on-ubuntu-18-04 but when i do echo “This is the body of the email” | mail -s “This is the subject line” my_email_address email do not delivered to my email
What is the problem?
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The problem is that the DO does not warn its customers, before making payment or contracting a plan, that their servers are blocked for sending SMTP. The only solution is to use the external SMTP service. This is really frustrating, after hours of setup you realize that the problem is not in your application. These tutorials should all be redone.
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