SMTP
SMTP is a protocol used for sending emails across networks. It facilitates the transmission of email messages between servers and is a fundamental component of email communication.
This chapter is in-progress.
Check Mail Relay
# https://github.com/mludvig/smtp-cli
./smtp-cli --verbose --server 203.0.113.50 --from sender@example.com --to recipient@example.com --subject "test" --body-plain "Greetings from Acuity."
Connect via openssl to IMAPS
openssl s_client -connect 203.0.113.50:imaps
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