Overview
After accepting a calendar invite from the meeting organizer and by selecting 'Send the response now' within Microsoft Outlook, the meeting organizer receives a blank email as a response.
Environment
- GFI MailEssentials
- Microsoft Exchange
Root Cause
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.
Resolution
The following procedure explains how to disable GFI MailEssentials from adding disclaimers on responses to Microsoft Outlook appointment and meeting requests.
- Open the product.config file using a text editor such as Notepad:
..\GFI\MailEssentials\AntiSpam\Data\ - 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.