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6 Appendix A: Product Behavior

The information in this specification is applicable to the following Microsoft products or supplemental software. References to product versions include released service packs:

  • Microsoft .NET Framework 2.0

  • Microsoft .NET Framework 3.0

  • Microsoft .NET Framework 3.5

  • Microsoft .NET Framework 4.0

  • Microsoft .NET Framework 4.5

  • Windows 2000 operating system

  • Windows XP operating system

  • Windows Server 2003 operating system

  • Windows Vista operating system

  • Windows Server 2008 operating system

  • Windows 7 operating system

  • Windows Server 2008 R2 operating system

  • Windows 8 operating system

  • Windows Server 2012 operating system

  • Windows 8.1 operating system

  • Windows Server 2012 R2 operating system

Exceptions, if any, are noted below. If a service pack or Quick Fix Engineering (QFE) number appears with the product version, behavior changed in that service pack or QFE. The new behavior also applies to subsequent service packs of the product unless otherwise specified. If a product edition appears with the product version, behavior is different in that product edition.

Unless otherwise specified, any statement of optional behavior in this specification that is prescribed using the terms SHOULD or SHOULD NOT implies product behavior in accordance with the SHOULD or SHOULD NOT prescription. Unless otherwise specified, the term MAY implies that the product does not follow the prescription.

<1> Section 1.5: A Windows SMTP server and SMTP client use Security Support Provider Interface (SSPI) to obtain and process NTLM messages. For more information on SSPI, see [SSPI].

<2> Section 3.1.4.1: Windows-based email clients that use the ISMTPTransport interface, Office Outlook 2003, Office Outlook 2007, Outlook 2010, and Outlook 2013 do not send the NTLM_NEGOTIATE_MESSAGE with the SMTP_AUTH_NTLM_Initiation_Command message.

<3> Section 3.2: Windows 2000, Windows XP, Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 support the server role.

<4> Section 3.2.5.2.2: A Windows SMTP server does not permit a client to authenticate using credentials for the user identified as the "BUILTIN\Administrator" account, for security reasons. Internally, the NTLM software reports to the SMTP server that the authentication succeeded, but Windows SMTP then checks the user credentials and fails the authentication, sending the SMTP_AUTH_Fail_Response message even though NTLM actually succeeded the authentication.

For additional information on built-in accounts and groups, see "SID Values For Default Windows NT Installations", [MSKB-163846].

 
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