Sendmail

Historical Unix mail transfer agent.

Sendmail is one of the original Unix MTAs, dating to 1982. It is still in use on legacy systems and continues to be maintained, although Postfix and Exim have replaced it on most modern Linux installations.

License: Sendmail License

Category: Networking

Website: https://www.proofpoint.com/us/sendmail-open-source

Install

Debian/Ubuntu: sudo apt install sendmail

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