Email fax requests fail with the following error: '451 4.4.0 primary target IP address responded with 421 4.2.1 unable to connect'
GFI FaxMaker installed on a separate machine
all supported environments
Open the Services console by clicking Start > Run > and typing 'services.msc'
Locate the service Simple Mail Transfer Protocol (SMTP)
Set the service to Automatic and start it
The Simple Mail Transfer Protocol service is not running and set to start manually