Answer

PROBLEM

GFI FaxMaker Message Transfer Agent fails to process emails arriving in the ..\FaxMaker\SinkDrop folder. The log file indicates the following error message:

Error failed to create CDO message instance[0x80040154]

ENVIRONMENT

• GFI FaxMaker 2011 or higher
• 64 bit versions of Windows

SOLUTION

Please perform the following steps:

1. Open a command prompt (Start > Run > type cmd and press Enter)
2. Register codsys.dll in SysWow64 with the following command: C:\Windows\SysWOW64>regsvr32 cdosys.dll
3. Unregister codsys.dll in system32  with the following command: C:\Windows\System32>regsvr32 /u cdosys.dll
4. Reboot the server 

CAUSE

GFI FaxMaker Message Transfer Agent failed to create a CDO object, because the required DLL file cdosys.dll was not registered with the OS correctly.