Product:  ModusGate

Version & Build:  4.35

 

 

 

Background:

 

For messages larger than 4K in size, DSN will only send header information.  For messages smaller than 4K, DSN will send the entire contents of the message.  This 4K limit may be too restrictive for some clients. 

 

 

 

Solution:

 

ModusGate v4.4.568 added a Registry key that allows you to change this value:

 

• Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\SMTPDS\Parameters
• Locate the MsgSizeOnlyHeader key and open it
• Assign a value greater than 4
• Stop/start the SMTPDS service