When a program tries to send mail, it sends the command EHLO followed by its hostname.

In some cases it only sends the hostname, but the mail server expect a fully qualified domain name (FQDN).

 

If my PC is named Egon-PC and is on the domain interform400.com, it should send the following command

EHLO Egon-Pc.interform400.com

But it only sends

EHLO Egon-Pc

 

To force it to send the FQDN you can add the line:

 

email.smtp.localhost=Egon-Pc.interform400.com

 

- to the settings.json file in the directory: {INTERFORMNG_HOME}\InterFormNG\profiles\default\

 

And restart the service.

 

To see what is sent to/from the mail server, you can turn debugging on by adding this line to the plugin.properties file as well:

 

email.debug=true

 

You also have to add the startparameter 'log4j' to the service:

 

 

You can now find this in the service.log file: EHLO Egon-Pc.interform400.com