RFC 1870
E772836
RFC 1870 is an earlier Internet standards document that defined support for extended SMTP message sizes before being superseded by RFC 2821.
All labels observed (1)
| Label | Occurrences |
|---|---|
| RFC 1870 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T8852465 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: RFC 1870 Context triple: [RFC 2821, obsoletes, RFC 1870]
-
A.
RFC 1670
RFC 1670 is an early Internet standards document related to network protocols that was later superseded by RFC 1901.
-
B.
RFC 1889
RFC 1889 was the original specification of the Real-time Transport Protocol (RTP) for delivering audio and video over IP networks, later obsoleted by updated standards.
-
C.
RFC 1730
RFC 1730 is an early specification of the Internet Message Access Protocol (IMAP) that was later superseded by RFC 3501.
-
D.
RFC 1869
RFC 1869 is an early Internet standard that introduced the Extended Simple Mail Transfer Protocol (ESMTP) framework for adding optional extensions to SMTP.
-
E.
RFC 1771
RFC 1771 is an early specification of the Border Gateway Protocol (BGP-4) used for inter-domain routing on the Internet, later superseded by RFC 4271.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: RFC 1870 Target entity description: RFC 1870 is an earlier Internet standards document that defined support for extended SMTP message sizes before being superseded by RFC 2821.
-
A.
RFC 1670
RFC 1670 is an early Internet standards document related to network protocols that was later superseded by RFC 1901.
-
B.
RFC 1889
RFC 1889 was the original specification of the Real-time Transport Protocol (RTP) for delivering audio and video over IP networks, later obsoleted by updated standards.
-
C.
RFC 1730
RFC 1730 is an early specification of the Internet Message Access Protocol (IMAP) that was later superseded by RFC 3501.
-
D.
RFC 1869
RFC 1869 is an early Internet standard that introduced the Extended Simple Mail Transfer Protocol (ESMTP) framework for adding optional extensions to SMTP.
-
E.
RFC 1771
RFC 1771 is an early specification of the Border Gateway Protocol (BGP-4) used for inter-domain routing on the Internet, later superseded by RFC 4271.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
Internet standard
ⓘ
Request for Comments ⓘ Standards-track RFC ⓘ |
| appliesTo |
Extended SMTP
ⓘ
linked to:
Extended Simple Mail Transfer Protocol
|
| area | Applications ⓘ |
| author |
Greg Vaudreuil
ⓘ
John Klensin ⓘ Keith Moore ⓘ Ned Freed ⓘ |
| category | Standards Track ⓘ |
| defines |
SIZE SMTP extension
ⓘ
linked to:
Extended Simple Mail Transfer Protocol
SMTP Service Extension for Message Size Declaration ⓘ
linked to:
Extended Simple Mail Transfer Protocol
client declaration of message size prior to transfer ⓘ server advertisement of maximum supported message size ⓘ |
| definesHeaderOrParameter | SIZE ⓘ |
| documentSeries | STD ⓘ |
| hasRFCNumber | 1870 ⓘ |
| intendedFor |
SMTP clients
ⓘ
SMTP servers ⓘ
linked to:
SMTP
|
| keyword |
ESMTP
ⓘ
linked to:
Extended Simple Mail Transfer Protocol
mail transfer ⓘ message size ⓘ |
| language | English ⓘ |
| obsoletedBy |
RFC 2821
ⓘ
RFC 5321 ⓘ |
| partOf | SMTP extension framework ⓘ |
| protocolFamily |
Simple Mail Transfer Protocol
ⓘ
linked to:
SMTP
|
| publicationMonth | November ⓘ |
| publicationYear | 1995 ⓘ |
| publishedBy | Internet Engineering Task Force ⓘ |
| relation | Predecessor of RFC 2821 for message size extension ⓘ |
| specifies |
SIZE parameter to the MAIL FROM command
ⓘ
mechanism for declaring maximum message size ⓘ server response when message size exceeds declared limit ⓘ |
| standardizes |
ESMTP SIZE extension
ⓘ
linked to:
Extended Simple Mail Transfer Protocol
|
| status | Proposed Standard ⓘ |
| stream |
IETF
ⓘ
linked to:
Internet Engineering Task Force
|
| title | SMTP Service Extension for Message Size Declaration ⓘ |
| updatesSpecificationOf | SMTP ⓘ |
| workingGroup |
SMTP Working Group
ⓘ
linked to:
IETF ESMTP Working Group
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: RFC 1870 Description of subject: RFC 1870 is an earlier Internet standards document that defined support for extended SMTP message sizes before being superseded by RFC 2821.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.