A user accepts a calendar invite from an external sender by selecting Send the response now within Microsoft Outlook. The meeting organizer receives a blank email as a response.
- GFI MailEssentials
- Microsoft Exchange
The following procedure explains how to disable GFI MailEssentials from adding disclaimers on responses to Microsoft Outlook appointment and meeting requests
- Open the following file using a text editor such as Notepad: ..\GFI\MailEssentials\AntiSpam\Data\product.config
- Add the following line as the last key on the line before the closing </appSettings> tag: <add key="DisableOLMeetingDisclaimer" value="1"/>
- Restart the Microsoft Exchange Transport Service from the Services console
This issue occurs when GFI MailEssentials is installed on the mentioned Microsoft Exchange versions. GFI MailEssentials adds a disclaimer to outbound Microsoft Outlook appointment and meeting requests. The disclaimer modifies the notification in such a way that makes it unreadable in Microsoft Outlook.