General query really to confirm info i have been given.
I have some alarm equipment that uses port 25 BUT its uses the RECIPIANT address as the FROM address and i have been lead to belive that you can add that FROM address somewhere and class it as a VALID address.
the back story i have an alarm that will do e-mail as a back up monitoring info. and from what i can guess email is being bounced as its being SENT from an UNKNOWN address.
hoping someone may have a url that i haven't found.