Cited in: RFC 821
3 RFCs mentioned in the text of RFC 821 (Simple Mail Transfer Protocol)
| RFC | Title | Status | Date |
|---|---|---|---|
| 788 | Simple Mail Transfer Protocol | Unknown | November 1981 |
| 793 | Transmission Control Protocol | Internet Standard | September 1981 |
| 822 | STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGES | Internet Standard | August 1982 |