smtp server do not send email
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” myemailaddress email do not delivered to my email
What is the problem?
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