What is Recived header EXIM?

Question

Exim

What goes in recived?
Helo / sender / machine domain or something else?

The task is as follows:
having exim (vesta cp) and 4 domains and a mailing script - to make sure that at the output of the recipient, recived is rotated from these 4 domains in random order.

SMTP of the machine on which the mailing script is installed does not send to the outside, it sends through smtp connected to the script.

Thanks for the advice and don't worry.

Answer 1

FQDN of the host
to solve the problem - see how the mailers do when the domain is yours, and the IPs are theirs

Answer 2

The Recived fields are written by the recipient server. You can delete Recived on your server, but if 4 domains are spinning on the same machine, the lower recived will be the same for all letters.