https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f Specifies the AUTH LOGIN extension to the SMTP Protocol, which supports a simple, base 64-encoded authentication mechanism. https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 21.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN].pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-240416.docx">DOCX</a></li></ul> Tue, 16 Apr 2024 MS-XLOGIN-20240416 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 20.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210817.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210817.docx">DOCX</a></li></ul> Tue, 17 Aug 2021 MS-XLOGIN-20210817 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 20.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210625.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210625.docx">DOCX</a></li></ul> Fri, 25 Jun 2021 MS-XLOGIN-20210625 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 19.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210422.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210422.docx">DOCX</a></li></ul> Thu, 22 Apr 2021 MS-XLOGIN-20210422 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 18.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210407.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-210407.docx">DOCX</a></li></ul> Wed, 07 Apr 2021 MS-XLOGIN-20210407 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 17.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-181001.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-181001.docx">DOCX</a></li></ul> Mon, 01 Oct 2018 MS-XLOGIN-20181001 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 16.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-180724.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-180724.docx">DOCX</a></li></ul> Tue, 24 Jul 2018 MS-XLOGIN-20180724 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 15.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-171212.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-171212.docx">DOCX</a></li></ul> Tue, 12 Dec 2017 MS-XLOGIN-20171212 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 14.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-170915.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-170915.docx">DOCX</a></li></ul> Fri, 15 Sep 2017 MS-XLOGIN-20170915 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 13.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-170316.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-170316.docx">DOCX</a></li></ul> Thu, 16 Mar 2017 MS-XLOGIN-20170316 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 12.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-160914.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-160914.docx">DOCX</a></li></ul> Wed, 14 Sep 2016 MS-XLOGIN-20160914 https://docs.microsoft.com/en-us/openspecs/exchange_server_protocols/MS-XLOGIN/e410ec76-ab45-47fb-a49c-b557d99e671f <b>Protocol Revision:</b> 12.0<br/><b>Downloads:</b><br/><ul style="list-style-type: square;"><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-160613.pdf">PDF</a></li><li><a href="https://msopenspecs.azureedge.net/files/MS-XLOGIN/[MS-XLOGIN]-160613.docx">DOCX</a></li></ul> Mon, 13 Jun 2016 MS-XLOGIN-20160613