SMTP RFCs < Email Protocols in the Yahoo! Directory

RFC 821 - Simple Mail Transfer Protocol
www.cis.ohio-state.edu/cgi-bin/rfc/rfc0821.html
RFC 822 - Standard for ARPA Internet Text Messages
www.cis.ohio-state.edu/cgi-bin/rfc/rfc0822.html
RFC 2821 - Simple Mail Transfer Protocol
www.cis.ohio-state.edu/cgi-bin/rfc/rfc2821.html
RFC 1891 - Extension for Delivery Status Notifications
www.cis.ohio-state.edu/cgi-bin/rfc/rfc1891.html
RFC 1870 - Extension for Message Size Declaration
www.cis.ohio-state.edu/cgi-bin/rfc/rfc1870.html
RFC 2554 - Extension for Authentication
www.cis.ohio-state.edu/cgi-bin/rfc/rfc2554.html
RFC 1869 - SMTP Service Extensions
www.cis.ohio-state.edu/cgi-bin/rfc/rfc1869.html
RFC 2034 - Extension for Returning Enhanced Error Codes
www.cis.ohio-state.edu/cgi-bin/rfc/rfc2034.html
RFC 2487 - Extension for Secure SMTP over TLS
www.cis.ohio-state.edu/cgi-bin/rfc/rfc2487.html
RFC 2822 - Internet Message Format
www.cis.ohio-state.edu/cgi-bin/rfc/rfc2822.html
RFC 1985 - Extension for Remote Message Queue Starting
www.cis.ohio-state.edu/cgi-bin/rfc/rfc1985.html
RFC 2197 - Extension for Command Pipelining
www.cis.ohio-state.edu/cgi-bin/rfc/rfc2197.html
RFC 876 - Survey of SMTP Implementations
www.cis.ohio-state.edu/cgi-bin/rfc/rfc0876.html

Email Protocols > SMTP RFCs