I have set up an email with our domain which forwards the email to an external print server.
[my email client:firstname.lastname@example.org]
The emails are forwarded. However the print server responds with a message
The ‘TO’ or ‘CC’ field of the email you sent did not include a printer email address.
Indeed, the email is delivered like this
I want either the 'To' field to be the address of the external print server, or to add the external print server as a 'CC' field.