https://leikah.haoyingcao.xyz/en/tags/smtp/Recent content in SMTP on LEIKAHHugoenhttps://leikah.haoyingcao.xyz/en/docs/services/smtp/Mon, 01 Jan 0001 00:00:00 +0000https://leikah.haoyingcao.xyz/en/docs/services/smtp/<h2 id="service-info">Service Info<a class="td-heading-self-link" href="#service-info" aria-label="Heading self-link"></a></h2> <ul> <li>Name: Simple Mail Transfer Protocol (SMTP)</li> <li>Purpose: Sending emails over an IP network.</li> <li>Listening port: <strong>TCP port 25</strong>, <strong>TCP port 587</strong> (Encrypted Transport)</li> <li>OS: Unix-Like, Windows</li> </ul> <p>SMTP faciliates the transfer of mail between a client and a mail server, or between two mail servers. Originally, SMTP did not include user authencation nor transport encryption. Both features are implemented in <strong>Extended Simple Mail Transfer Protocol (ESMTP)</strong>, which faciliates most mail services today.</p>