Cited in: RFC 1861

3 RFCs mentioned in the text of RFC 1861 (Simple Network Paging Protocol - Version 3 -Two-Way Enhanced)

RFC	Title	Status	Date
821	Simple Mail Transfer ProtocolJ. Postel · obsoleted by RFC 2821	Internet Standard	August 1982
1425	SMTP Service ExtensionsJ. Klensin, N. Freed, Ed., M. Rose, E. Stefferud, D. Crocker · obsoleted by RFC 1651	Proposed Standard	February 1993
1521	MIME (Multipurpose Internet Mail Extensions) Part One: Mechanisms for Specifying and Describing the Format of Internet Message BodiesN. Borenstein, N. Freed · obsoleted by RFC 2045, RFC 2046, RFC 2047, RFC 2048, RFC 2049	Draft Standard	September 1993