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Changes
→Basic Concepts and protocols
* [https://scs.senecac.on.ca/~raymond.chan/ops535/1503/notes/smtp.pdf SMTP Slides]
* [https://scs.senecac.on.ca/~raymond.chan/ops535/1503/notes/pop3-imap.pdf POP3 and IMAP Slides]
= Sender Policy Framework =
To protect other people spoofing your domain for email.
* [https://wiki.cdot.senecacollege.ca/wiki/OPS535_Postfix_SPF Postfix and SPF]
= References =
* [http://en.wikipedia.org/wiki/Email Email on Wikipedia]
