Exchange 2010 Support for RFC Standards

Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2

Topic Last Modified: 2010-07-27

This topic is intended to be a reference for the Request for Comments (RFC) and other standards that are supported in Microsoft Exchange Server 2010. Although every effort has been made to verify this information, omission of an RFC from this list does not necessarily mean that Exchange does not fully or partially support the RFC. RFCs are guidelines, and they frequently contain two types of information: required and optional. Microsoft and other vendors may choose not to implement optional requirements, or they may interpret sections of RFCs differently.

If you are experiencing a problem that you believe is caused because Exchange does not correctly support a particular RFC, open a support incident through Microsoft Customer Support Services (CSS).

Important:
The information that is contained in this topic represents the current view of Microsoft Corporation about the issues discussed as of the date of publication. Because Microsoft must respond to changing market conditions, this information should not be interpreted to be a commitment on the part of Microsoft. Microsoft cannot guarantee the accuracy of any information that is presented in this topic after the date of publication. This topic is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AS TO THE INFORMATION IN THIS DOCUMENT.

Important:

The information that is contained in this topic represents the current view of Microsoft Corporation about the issues discussed as of the date of publication. Because Microsoft must respond to changing market conditions, this information should not be interpreted to be a commitment on the part of Microsoft. Microsoft cannot guarantee the accuracy of any information that is presented in this topic after the date of publication.

This topic is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, AS TO THE INFORMATION IN THIS DOCUMENT.

RFC Implementation Statements

All document references are listed in the following format:

Document/RFC: Document or RFC index

Title: Description or title of document

Updated by: RFCs that update this document

Updates: RFCs that are updated by this document

Obsoletes: RFCs that are replaced by this document or are obsolete

Exchange 2010 specific: RFCs that are implemented by or supported by Exchange 2010; if applicable, the component and any other notes about support for the applicable RFC; links to additional information

Note:
For the purposes of this topic, "implemented" means that the RFC has been implemented natively within Exchange 2010, and "supported" means that a technology that is outside Exchange 2010 has implemented the RFC but that Exchange 2010 uses that implementation.

Not all document references contain all fields that are shown in the sample format. In some cases, the information has been merged. Refer to the document source for the latest information.

World Wide Web Consortium (W3C) Standards

Note:
The third-party Web site information in this topic is provided to help you find the technical information you need. The URLs are subject to change without notice.

Document: http://www.w3.org/TR/REC-html32

Title: HTML 3.2 Reference Specification

Exchange 2010 specific: Implemented by Exchange 2010 Text Conversion component

Document: http://www.w3.org/TR/REC-html40

Title: HTML 4.01 Specification

Exchange 2010 specific: Implemented by Exchange 2010 Text Conversion component

Document: http://www.w3.org/TR/2000/NOTE-SOAP-20000508/

Title: Simple Object Access Protocol (SOAP) 1.1

Exchange 2010 specific: Partially implemented by Exchange Web Services

Document:Web Services-Interoperability Organization (WS-I) Standards

Title: Basic Profile Version 1.0

Exchange 2010 specific: Implemented by Exchange 2010 Web Services

RFC: 1035 http://www.ietf.org/rfc/rfc1035.txt

Title: Domain Names – Implementation and Specification

Updated by: 1101, 1183, 1348, 1876, 1982, 1995, 1996, 2065, 2136, 2137, 2181, 2308, 2535, 2845, 3425, 3658, 4033, 4034, 4035, 4343

Obsoletes: 882, 883, 973

Exchange 2010 specific: Supported by Exchange 2010

RFC: 1652 http://www.ietf.org/rfc/rfc1652.txt

Title: SMTP Service Extension for 8bit-MIME transport

Obsoletes: 1426

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 1731 http://www.ietf.org/rfc/rfc1731.txt

Title: IMAP4 Authentication Mechanisms

Exchange 2010 specific: Implemented by Exchange 2010 IMAP4 Service

RFC: 1740 http://www.ietf.org/rfc/rfc1740.txt

Title: Mime Encapsulation of Macintosh files – MacMIME

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 1741 http://www.ietf.org/rfc/rfc1741.txt

Title: MIME Content Type for BinHex Encoded Files

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 1823 http://www.ietf.org/rfc/rfc1823.txt

Title: The LDAP Application Program Interface

Exchange 2010 specific: Supported by Exchange 2010 to communicate with Active Directory

RFC: 1870 http://www.ietf.org/rfc/rfc1870.txt

Title: SMTP Service Extension for Message Size Declaration

Obsoletes: 1653

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

RFC: 1896 http://www.ietf.org/rfc/rfc1896.txt

Title: The text/enriched MIME Content-type

Obsoletes: 1523, 1563

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 1939 http://www.ietf.org/rfc/rfc1939.txt

Title: Post Office Protocol – Version 3

Updated by: 1957, 2449

Obsoletes: 1725

Exchange 2010 specific: Implemented by Exchange 2010 POP3 Service

RFC: 2034 http://www.ietf.org/rfc/rfc2034.txt

Title: SMTP Service Extension for Returning Enhanced Error Codes

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

RFCs: 2045, 2046, 2047, 4289 2049, 4288

http://www.ietf.org/rfc/rfc2045.txt

http://www.ietf.org/rfc/rfc2046.txt

http://www.ietf.org/rfc/rfc2047.txt

http://www.ietf.org/rfc/rfc4289.txt

http://www.ietf.org/rfc/rfc2049.txt

http://www.ietf.org/rfc/rfc4288.txt

Titles: Multipurpose Internet Mail Extensions (MIME) [parts 1-5]

Media Type Specifications and Registration Procedures

Updated by:2184, 2231, 2646, 3798

Obsoletes: 1521, 1522, 1590, 2048

Exchange 2010 specific: Implemented by Exchange 2010

RFC: 2088 http://www.ietf.org/rfc/rfc2088.txt

Title: IMAP4 non-synchronizing literals

Updated by:4466

Exchange 2010 specific: Implemented by Exchange 2010 IMAP4 Service

RFC: 2177 http://www.ietf.org/rfc/rfc2177.txt

Title: IMAP4 IDLE command

Exchange 2010 specific: Implemented by Exchange 2010 IMAP4 Service

RFC: 2181 http://www.ietf.org/rfc/rfc2181.txt

Title: Clarifications to the DNS Specification

Updated by: 2535, 4033, 4034, 4035, 4343

Updates: 1034, 1035, 1123

Exchange 2010 specific:Supported by Exchange 2010

RFC: 2183 http://www.ietf.org/rfc/rfc2183.txt

Title: Communicating Presentation Information in Internet Messages: The Content-Disposition Header Field

Updated by: 2184, 2231

Updates: 1806

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 2231 http://www.ietf.org/rfc/rfc2231.txt

Title: MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages, and Continuations

Updates: 2045, 2047, 2183

Obsoletes: 2184

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

Note:
Although RFC2231-encoded attachment file names are supported during inbound conversion, Exchange 2010 does not generate RFC2231-encoded content in MIME e-mail messages.

RFC: 2247 http://www.ietf.org/rfc/rfc2247.txt

Title: Using Domains in LDAP/X.500 Distinguished Names

Updated by: 4519, 4524

Exchange 2010 specific: Supported by Exchange 2010

RFC: 2311 http://www.ietf.org/rfc/rfc2311.txt

Title: S/MIME Version 2 Message Specification

Exchange 2010 specific: Implemented by Exchange 2010 Outlook Web App and S/MIME control

RFC: 2312 http://www.ietf.org/rfc/rfc2312.txt

Title: S/MIME Version 2 Certificate Handling

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 2342 http://www.ietf.org/rfc/rfc2342.txt

Title: IMAP4 Namespace

Updated by: 4466

Exchange 2010 specific: Implemented by Exchange 2010 IMAP4 Service

RFC: 2387 http://www.ietf.org/rfc/rfc2387.txt

Title: The MIME Multipart/Related Content-type

Updated by: 2112

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 2445 http://www.ietf.org/rfc/rfc2445.txt

Title: Internet Calendaring and Scheduling Core Object Specification (iCalendar)

Exchange 2010 specific: Implemented by Exchange 2010

RFC: 2446 http://www.ietf.org/rfc/rfc2446.txt

Title: iCalendar Transport-Independent Interoperability Protocol (iTIP) Scheduling Events, BusyTime, To-dos and Journal Entries

Exchange 2010 specific: Implemented by Exchange 2010 (partially supported)

RFC: 2447 http://www.ietf.org/rfc/rfc2447.txt

Title: iCalendar Message-Based Interoperability Protocol (iMIP)

Exchange 2010 specific: Implemented by Exchange 2010 (partially supported)

RFC: 2449 http://www.ietf.org/rfc/rfc2449.txt

Title: POP3 Extension Mechanism

Updated by: 5034

Updates: 1939

Exchange 2010 specific: Implemented by Exchange 2010 POP3 Service

RFC: 2557 http://www.ietf.org/rfc/rfc2557.txt

Title: MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)

Obsoletes: 2110

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 2595 http://www.ietf.org/rfc/rfc2595.txt

Title: Using TLS with IMAP, POP3 and ACAP

Updated by: 4616

Exchange 2010 specific: Implemented by Exchange 2010 IMAP4 and POP3 services; ACAP not supported

RFC: 2616 http://www.ietf.org/rfc/rfc2616.txt

Title: Hypertext Transfer Protocol – HTTP v1.1

Updated by: 2817

Obsoletes: 2068

Exchange 2010 specific: Implemented by Windows Server 2008; supported by Exchange 2010 Autodiscover Service and Exchange Web Services

RFC: 2617 http://www.ietf.org/rfc/rfc2617.txt

Title: HTTP Authentication: Basic and Digest Access Authentication

Obsoletes: 2069

Exchange 2010 specific: Supported by Exchange 2010 Autodiscover Service and Exchange Web Services

RFC: 2631 http://www.ietf.org/rfc/rfc2631.txt

Title: Diffie-Hellman Key Agreement Method

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App S/MIME Control

RFC: 2634 http://www.ietf.org/rfc/rfc2634.txt

Title: Enhanced Security Services for S/MIME

Exchange 2010 specific: Partially supported by Exchange 2010

RFC: 2782 http://www.ietf.org/rfc/rfc2782.txt

Title: A DNS RR for specifying the location of services (DNS SRV)

Obsoletes: 2052

Exchange 2010 specific: Supported by Exchange 2010

RFC: 2797 http://www.ietf.org/rfc/rfc2797.txt

Title: Certificate Management Messages over CMS

Exchange 2010 specific: Implemented by Exchange 2010 Outlook Web App S/MIME Control

RFC: 2821 http://www.ietf.org/rfc/rfc2821.txt

Title: Simple Mail Transfer Protocol

Updates: 1123

Obsoletes: 821, 974, 1869

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service.

Note:
Note that Exchange 2010 does not currently support IP Literals (RFC 2821, Section 4.1.3).

RFC: 2822 http://www.ietf.org/rfc/rfc2822.txt

Title: Internet Message Format

Obsoletes: 822

Exchange 2010 specific: Implemented by Exchange 2010 MIME Conversion Shared Components

RFC: 3030 http://www.ietf.org/rfc/rfc3030.txt

Obsoletes: 1830

Title: SMTP Service Extensions for Transmission of Large and Binary MIME Messages

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

RFC: 3207 http://www.ietf.org/rfc/rfc3207.txt

Title: SMTP Service Extension for Secure SMTP over Transport Layer Security

Obsoletes: 2487

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

RFC: 3217 http://www.ietf.org/rfc/rfc3217.txt

Title: Triple-DES and RC2 Key Wrapping

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

RFC: 3278 http://www.ietf.org/rfc/rfc3278.txt

Title: Use of Elliptic Curve Cryptography (ECC) Algorithms in Cryptographic Message Syntax (CMS)

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 3370 http://www.ietf.org/rfc/rfc3370.txt

Title: Cryptographic Message Syntax (CMS) Algorithms

Obsoletes: 2630, 3211

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 3394 http://www.ietf.org/rfc/rfc3394.txt

Title: Advanced Encryption Standard (AES) Key Wrap Algorithm

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 3461 http://www.ietf.org/rfc/rfc3461.txt

Title: Simple Mail Transfer Protocol (SMTP) Service Extension for Delivery Status Notifications (DSNs)

Obsoletes: 1891

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

Note:
For more information, see Understanding DSNs and NDRs

RFC: 3462 http://www.ietf.org/rfc/rfc3462.txt

Title: The Multipart/Report Content Type for the Reporting of Mail System Administrative Messages

Obsoletes: 1892

Exchange 2010 specific: Partially implemented by Exchange 2010 Transport service

RFC: 3463 http://www.ietf.org/rfc/rfc3463.txt

Title: Enhanced Mail System Status Codes

Updated by: 3886, 4468, 4865, 4954

Obsoletes: 1893

Exchange 2010 specific:Implemented by Exchange 2010 Transport Service

Note:
For more information, see Understanding DSNs and NDRs

RFC: 3464 http://www.ietf.org/rfc/rfc3464.txt

Title: An Extensible Message Format for Delivery Status Notifications

Updated by: 4865

Obsoletes: 1894

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

RFC: 3501 http://www.ietf.org/rfc/rfc3501.txt

Title: Internet Message Access Protocol – Version 4rev1

Updated by: 4466, 4469, 4551, 5032, 5182

Obsoletes: 2060

Exchange 2010 specific: Implemented by Exchange 2010 (AUTH=PLAIN not supported)

RFC: 3503 http://www.ietf.org/rfc/rfc3503.txt

Title: Message Disposition Notification (MDN) profile for Internet Message Access Protocol (IMAP).

Exchange 2010 specific: Implemented by Exchange 2010 and adheres to the server implementation section

RFC: 3565 http://www.ietf.org/rfc/rfc3565.txt

Title: Use of the Advanced Encryption Standard (AES) Encryption Algorithm in Cryptographic Message Syntax (CMS)

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 3629 http://www.ietf.org/rfc/rfc3629.txt

Title: UTF-8, a transformation format of ISO 10646

Updates: 2279

Exchange 2010 specific: Supported by Exchange 2010

RFC: 3834 http://www.ietf.org/rfc/rfc3834.txt

Title: Recommendations for Automatic Responses to Electronic Mail

Exchange 2010 specific: Implemented by Exchange 2010 Mailbox Server

RFC: 3842 http://www.ietf.org/rfc/rfc3842.txt

Title: A Message Summary and Message Waiting Indication Event Package for the Session Initiation Protocol (SIP)

Exchange 2010 specific: Implemented by Exchange 2010 Unified Messaging

RFC: 3850 http://www.ietf.org/rfc/rfc3850.txt

Title: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Certificate Handling

Obsoletes: 2632

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 3851 http://www.ietf.org/rfc/rfc3851.txt

Title: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.1 Message Specification

Obsoletes: 2633

Exchange 2010 specific: Implemented by Exchange 2010 Outlook Web App and S/MIME control

RFC: 3852 http://www.ietf.org/rfc/rfc3852.txt

Title: Cryptographic Message Syntax (CMS)

Updated by: 4853, 5083

Obsoletes: 3369

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 3974 http://www.ietf.org/rfc/rfc3974.txt

Title: SMTP Operational Experience in Mixed IPv4/v6 Environments

Exchange 2010 specific: Supported by Exchange 2010 Transport service

RFC: 4120 http://www.ietf.org/rfc/rfc4120.txt

Title: The Kerberos Network Authentication Service (V5)

Updated by: 4537, 5021

Obsoletes: 1510

Exchange 2010 specific: Supported by Exchange 2010 Mailbox, Client Access, Hub Transport, and Unified Messaging (UM) servers that have the MSRPC protocol, and by the Exchange POP3, IMAP4, and SMTP services

RFC: 4262 http://www.ietf.org/rfc/rfc4262.txt

Title: X.509 Certificate Extension for Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 4346 http://www.ietf.org/rfc/rfc4346.txt

Title: The Transport Layer Security (TLS) Protocol Version 1.1

Updated by: 4366, 4680, 4681

Obsoletes: 2246

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service, and by POP3, SMTP, and IMAP4 services

RFC: 4406 http://www.ietf.org/rfc/rfc4406.txt

Title: Sender ID: Authenticating E-Mail

Exchange 2010 specific: Partially implemented; Exchange 2010 does not support MTA forwarding of mail

RFC: 4409 http://www.ietf.org/rfc/rfc4409.txt

Title: Message Submission for Mail

Obsoletes: 2476

Exchange 2010 specific: Partially implemented; Exchange 2010 does not always return 554 DSN (for example, 550 5.7.1)

RFC: 4559 http://www.ietf.org/rfc/rfc4559.txt

Title: SPNEGO-based Kerberos and NTLM HTTP Authentication in Microsoft Windows

Exchange 2010 specific: Supported by Exchange 2010 Autodiscover Service and by Exchange Web Services

RFC: 4853 http://www.ietf.org/rfc/rfc4853.txt

Title: Cryptographic Message Syntax (CMS) Multiple Signer Clarification

Updates: 3852

Exchange 2010 specific: Implemented by Exchange 2010 Outlook Web Access and S/MIME control

RFC: 4954 http://www.ietf.org/rfc/rfc4954.txt

Title: SMTP Service Extension for Authentication

Updates: 3463

Obsoletes: 2554

Exchange 2010 specific: Implemented by Exchange 2010 Transport Service

RFC: 5008 http://www.ietf.org/rfc/rfc5008.txt

Title: Suite B in Secure/Multipurpose Internet Mail Extensions (S/MIME)

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and S/MIME control

RFC: 1734 http://www.ietf.org/rfc/rfc1734.txt

Title: POP3 Authentication command

Exchange 2010 specific: Implemented by Exchange 2010 POP3 service (Windows Integrated Authentication – NTLM and GSSAPI)

RFC: 5035 http://www.ietf.org/rfc/rfc5035.txt

Title: Enhanced Security Services (ESS) Update: Adding CertID Algorithm Agility

Updates: 2634

Exchange 2010 specific: Supported by Exchange 2010 Outlook Web App and by S/MIME control

For More Information

For more information about Exchange Server RFC and standards compliance in earlier versions of Exchange, see Microsoft Knowledge Base article 262986, Exchange Server RFC and standards compliance.

For more information about RFCs, visit the following non-Microsoft Web sites:

Note:
The third-party Web site information in this topic is provided to help you find the technical information you need. The URLs are subject to change without notice.