RFC 1090 (rfc1090) - Page 3 of 4
SMTP on X
Alternative Format: Original Text Document
RFC 1090 SMTP on X.25 February 1989
seconds, the call should be cleared and retried later.
10.2. established
After the protocol session is established, the circuit should
be cleared if no response is received for 10 minutes.
10.3. closing
After the QUIT command is issued, the timeout should be
shortened to 20 seconds. This will sometimes cause an
ungraceful exit, but this will not affect the SMTP transactions
already completed.
10.4. clearing
When the X.25 Clear Request packet has been sent, the VC should
be timed out in accordance with the X.25 protocol
specification.
11. Other features
Other features of X.25, such as permanent virtual circuits and
D bit selection, are not used.
References
[1] Postel, J., "Simple Mail Transfer Protocol", RFC 821, USC
Information Sciences Institute, August 1982.
[2] CCITT Recommendation X.25, "Interface Between Data
Terminal Equipment (DTE) and Data Circuit-Terminating
Equipment (DCE) for Terminals Operating in the Packet
Mode and Connected to Public Data Networks by Dedicated
Circuit", International Telegraph and Telephone Consultative
Committee, Fascicle VIII.3, Geneva, 1976; amended at
Geneva, 1980 and Malaga-Torremolinos, 1984. ("Red Book")
Author's Address
Robert Ullmann 23A-32
Prime Computer, Inc.
Technology Drive
Milford, MA 01757
Phone: +1 508 478 8600 x1736
Email:
Ullmann