(= Post Office Protocol,
"postkontori protokoll")

Õ:protokollide nimed on pärisnimed,
seega neid ei tõlgita

olemus
lihtne e-posti protokoll
- OSI rakenduskihis
- sissetulnud meili ümberlaadimiseks
meiliserverilt meilikliendile
- minimaalsete funktsioonidega
- kasutab porti 110
- algversioon: 1985

ülevaateid
https://www.2brightsparks.com/resources/articles/understanding-post-office-protocol-pop3.pdf

https://en.wikipedia.org/wiki/Post_Office_Protocol

http://www.internet-computer-security.com/Spam/SMTP-IMAP4-POP3.html

https://dspace.library.uvic.ca/bitstream/handle/1828/11705/Ali_Shahbaz_MEng_2020.pdf?sequence=3&isAllowed=y

standardid
https://tools.ietf.org/html/rfc918
https://tools.ietf.org/html/rfc1734
https://www.ietf.org/rfc/rfc1939.txt
https://www.ietf.org/rfc/rfc2449.txt
https://tools.ietf.org/html/rfc5034

turvalisus
https://ask.metafilter.com/217775/Is-the-POP3-email-protocol-insecure-even-with-TLS

http://blog.extremehacking.org/blog/2015/11/13/attacking-pop3-using-dictionary-attack/

http://www.berkes.ca/guides/secure_pop3.html

https://practical365.com/exchange-server/exchange-best-practices-secure-pop-and-imap-access/

https://cybersecurity.att.com/blogs/security-essentials/basic-best-practices-for-configuring-email-servers

vt ka
- IMAP
- SMTP