If I connect to the sendmail daemon(port 25) can I add headers manually?
connected to server.com sendmail 8.8.8 ready..
pleased to meet you myserver
MAIL From <email@example.com>
RECPT To: <firstname.lastname@example.org>
-> HEADER X-Name: "Here is goes: This is Header X-Name"
begin to write and end with a dot
How this HEADER X-Name: "Here is goes: This is Header X-Name" goes manually in telnet prompt at mail server port 25???