JSI Tip 5754. How do I disable 8BITMIME in the Windows 2000 SMTP service?

Microsoft Knowledge Base Article 262168 contains the following INTRODUCTION:

Microsoft Windows 2000 and Microsoft Windows Server 2003 include a Simple Mail Transfer Protocol (SMTP) service. The SMTP service can be used as a relay host. By default, this SMTP service advertises 8-bit Multipurpose Internet Mail Extensions, also known as 8BITMIME, and lets 8-bit MIME messages be relayed. Some products cannot handle 8-bit MIME messages. Products that cannot handle 8-bit MIME messages include the following:

Microsoft Exchange Server version 4.0
Microsoft Exchange Server version 5.0
Microsoft Exchange Server version 5.5

This article describes how to turn off the SMTP service so that it does not advertise 8BITMIME. You want to do this to prevent outside mail hosts from sending in 8-bit MIME messages.



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