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smtpd_use_tls = yes
smtp_use_tls = yes
smtpd_tls_key_file = /etc/pki/tls/private/email.asmith15.ops345.ca.key.pemsmtpd_tls_cert_file = /etc/pki/tls/certs/email.asmith15.ops345.ca.cert.pem
tls_random_source = dev:/dev/urandom
smtpd_tls_loglevel = 1
** IMAP: email.asmith15.ops345.ca, SSL 993, normal password, username without @domain
** SMTP: email.asmith15.ops345.ca, STARTTLS 25, normal password, username without @domain
* tail -f /var/log/maillog and send a message from thunderbird
* The message is not sent, because postfix is not configured to authenticate users. encryption alone is not enough.
* https://www.xmodulo.com/enable-user-authentication-postfix-smtp-server-sasl.html
** except the SSL/TLS parameters part.
* Send email again. Note the messages about connection timed out. We can't do anything about that in AWS Academy:
** https://aws.amazon.com/premiumsupport/knowledge-center/ec2-port-25-throttle/
* There's more to do anyway to set up a real sending server, as a minimum DKIM/SPF but reverse DNS for the domain also helps.
