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 [e-mail] --to [e-mail] --subject "test" --body-plain "Greetings from Acuity."

Connect via openssl to IMAPS

openssl s_client -connect 203.0.113.50:imaps