MAPI over HTTP
E697413
MAPI over HTTP is a Microsoft messaging transport protocol that enables Outlook and other clients to access Exchange Server mailboxes over standard HTTP/HTTPS connections for improved reliability and performance.
All labels observed (2)
| Label | Occurrences |
|---|---|
| MAPI over HTTP canonical | 3 |
| Microsoft Exchange protocol documentation (MS-OXCMAPIHTTP) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7893847 — 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: MAPI over HTTP Context triple: [Microsoft Exchange Server, supportsProtocol, MAPI over HTTP]
-
A.
Exchange ActiveSync
Exchange ActiveSync is a Microsoft-developed protocol that enables synchronization of email, contacts, calendar, and other data between mail servers and mobile or desktop clients.
-
B.
SMTP
SMTP (Simple Mail Transfer Protocol) is a standard communication protocol used for sending and routing email messages across IP networks.
-
C.
IMAP
IMAP (Internet Message Access Protocol) is a standard email protocol that allows clients to access and manage messages stored on a mail server while keeping them synchronized across multiple devices.
-
D.
Microsoft Exchange Server
Microsoft Exchange Server is Microsoft's enterprise email, calendaring, and collaboration server platform used by organizations to manage and synchronize communications across clients like Outlook.
-
E.
MXIM
MXIM is the stock ticker symbol for Maxim Integrated, a former American analog and mixed-signal semiconductor company acquired by Analog Devices.
- 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: MAPI over HTTP Target entity description: MAPI over HTTP is a Microsoft messaging transport protocol that enables Outlook and other clients to access Exchange Server mailboxes over standard HTTP/HTTPS connections for improved reliability and performance.
-
A.
Exchange ActiveSync
Exchange ActiveSync is a Microsoft-developed protocol that enables synchronization of email, contacts, calendar, and other data between mail servers and mobile or desktop clients.
-
B.
SMTP
SMTP (Simple Mail Transfer Protocol) is a standard communication protocol used for sending and routing email messages across IP networks.
-
C.
IMAP
IMAP (Internet Message Access Protocol) is a standard email protocol that allows clients to access and manage messages stored on a mail server while keeping them synchronized across multiple devices.
-
D.
Microsoft Exchange Server
Microsoft Exchange Server is Microsoft's enterprise email, calendaring, and collaboration server platform used by organizations to manage and synchronize communications across clients like Outlook.
-
E.
MXIM
MXIM is the stock ticker symbol for Maxim Integrated, a former American analog and mixed-signal semiconductor company acquired by Analog Devices.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
messaging transport protocol
ⓘ
network protocol ⓘ |
| accessesResource |
Exchange calendar
ⓘ
Exchange contacts ⓘ Exchange mailbox ⓘ Exchange tasks ⓘ |
| authenticationMethod |
Basic authentication (over SSL)
ⓘ
Kerberos ⓘ NTLM ⓘ OAuth ⓘ |
| benefit |
better coexistence with modern HTTP infrastructure
ⓘ
improved reliability over unreliable networks ⓘ reduced connection latency ⓘ |
| category |
Microsoft Exchange technology
ⓘ
linked to:
Microsoft Exchange Server
email access protocol ⓘ |
| configuredVia |
Exchange virtual directory
ⓘ
IIS ⓘ |
| defaultProtocolSince |
Exchange Server 2016
ⓘ
linked to:
Microsoft Exchange Server
Exchange Server 2019 ⓘ
linked to:
Microsoft Exchange Server
|
| developer | Microsoft ⓘ |
| documentation |
Microsoft Exchange protocol documentation (MS-OXCMAPIHTTP)
ⓘ
linked to:
MAPI over HTTP
|
| encryption | TLS ⓘ |
| exposes | MAPI RPC semantics over HTTP ⓘ |
| feature |
better visibility and diagnostics
ⓘ
faster reconnection ⓘ improved error handling ⓘ session affinity ⓘ support for network changes ⓘ |
| introducedIn |
Exchange Server 2013 Service Pack 1
ⓘ
linked to:
Microsoft Exchange Server
|
| protocolFor | Microsoft Exchange Server ⓘ |
| protocolFor | Outlook ⓘ |
| replacesProtocol | RPC over HTTP ⓘ |
| requires | Autodiscover ⓘ |
| supportsClient |
Microsoft Outlook 2013
ⓘ
linked to:
Outlook
Microsoft Outlook 2016 ⓘ
linked to:
Outlook
Microsoft Outlook 2019 ⓘ
linked to:
Outlook
Microsoft Outlook for Microsoft 365 ⓘ
linked to:
Outlook
|
| supportsScenario |
external Outlook connectivity
ⓘ
internal Outlook connectivity ⓘ load-balanced Exchange Client Access services ⓘ |
| supportsServer |
Exchange Server 2013 SP1
ⓘ
linked to:
Microsoft Exchange Server
Exchange Server 2016 ⓘ
linked to:
Microsoft Exchange Server
Exchange Server 2019 ⓘ
linked to:
Microsoft Exchange Server
|
| transportLayer | application layer ⓘ |
| usesPort |
TCP 443
ⓘ
TCP 80 ⓘ |
| usesTransportProtocol |
HTTP
ⓘ
HTTPS ⓘ |
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: MAPI over HTTP Description of subject: MAPI over HTTP is a Microsoft messaging transport protocol that enables Outlook and other clients to access Exchange Server mailboxes over standard HTTP/HTTPS connections for improved reliability and performance.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: MAPI over HTTP