Guidelines for headers in original message

[Abhijith Sethuraj]

Hello,

What are the general guidelines for headers and their values that are shown in the original message of an email? I'm particularly interested in the 'Received from: foo by bar'. Do people generally append the actual servernames along with their IP addresses for all the hops? Or, do they make the mails come out from a common relay server.

 

Also, if it's fine to make mails come from a common relay, is it a bad idea to set $myhostname to foo.relay for all the mails from foo domain, instead of showing all the hops? I've seen people put this as $myorigin. Hence, the question.

Thanks, 

Abhijith

[Wietse Venema]

Abhijith Sethuraj:

> Hello,
>
> What are the general guidelines for headers and their values that are shown
> in the original message of an email? I'm particularly interested in the
> 'Received from: foo by bar'. Do people generally append the actual
> servernames along with their IP addresses for all the hops? Or, do they
> make the mails come out from a common relay server.
>
> Also, if it's fine to make mails come from a common relay, is it a bad idea
> to set $myhostname to foo.relay for all the mails from foo domain, instead
> of showing all the hops? I've seen people put this as $myorigin. Hence, the
> question.

This (whether or not to strip internal hops and other internal
identifiers from the message header) is a matter of local policy.

        Wietse