The following registry key must be created or configured when synchronizing two or more installations of GFI MailEssentials when they are part of an Exchange 2010 DAG (Database Availability Group):
- Open regedit.exe (Start > Run > type regedit.exe and press Enter)
- Navigate to the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GFI\MailEssentials\AntiSpam\Config
- Locate the DWORD named SynchAgentNoClust (or create it if it does not exist)
- Set the value to 1.