5 ms·

Ask HN: Resources to understand mail servers indepth?

6 points by sharmi 9y ago

I would like to know how mail servers function and all the authentication mechanisms like DKIM, DMARC, SPF etc. What resources would you recommend? I would prefer a book but excellent articles and tutorial series would also be great.

hackermailman 9y ago
Can start with the smtp standard https://tools.ietf.org/rfc/rfc5321.txt https://tools.ietf.org/rfc/rfc5321.txt and follow the citations at the bottom to learn more about DKIM ect. OpenSMTPD has a few presentations on the changes they made and explains architecture https://www.opensmtpd.org/papers.html https://www.opensmtpd.org/papers.html
- sharmi 9y ago
  Thank you. I will start reading the rfc asap.
sd54 9y ago
Come work for us at Oath (Yahoo and AOL mail). Free food and great learning environment.