Overview

When emails are relayed from the Internet Information Services (IIS) Simple Mail Transfer Protocol (SMTP) server to the Microsoft Exchange server, the following error occurs:

Body type not supported by Remote Host

Environment

• GFI MailEssentials
• Microsoft Windows Server 2000
• Microsoft Windows Server 2003
• Microsoft IIS SMTP

Root Cause

By default, the IIS SMTP service advertises 8BITMIME and allows MIME messages to be relayed. However, Microsoft Exchange Server versions 4.0, 5.0, and 5.5 are not able to handle 8-bit MIME messages.

Resolution

To stop Microsoft Windows 2000 and Microsoft Windows Server 2003 IIS SMTP Service from advertising 8BITMIME, please refer to the following Microsoft Knowledgebase article: 

SOLUTION

To stop the Microsoft Windows 2000 and Microsoft Windows Server 2003 IIS SMTP Service from advertising 8BITMIME, please refer to the following Microsoft Knowledge base article: http://support.microsoft.com/default.aspx?scid=kb;en-us;Q262168

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