Re: Who sets Sender:?

[Harry Putnam <reader@newsguy.com>]

Barry Fishman <barry_fishman@att.net> writes:

> Norman Walsh <ndw@nwalsh.com> writes:
>
>> / Stainless Steel Rat <ratinox@peorth.gweep.net> was heard to say:
>> | Sender contains the mailbox of the agent responsible for submitting the
>> | message to the network (MTA).  The idea is that while the originator
>> | mailbox may be ndw@nwalsh.com, the Sender is the local user on the local
>> | machine.
>>
>> Ok, fair enough. So this presents an interesting conundrum. In my
>> case, the "local machine" has no name. I'm on a laptop behind a
>> firewall attached to a cable provider that generates a "random" IP
>> address via DHCP.
>
> I suspect this situation is very common.  My home network name I keep
> as just ".local" since at least conveys the impression that it will
> not be found from DNS, and is not expected to be unique.  I was also
> wondered about a message-id which was not anchored to a unique
> address.

Barry, I had a little trouble figuring out what the end result of our
customizations is.
>
> The approach I take is probably a bit convolved but begins by
> giving my system a unique name which should be at least traceable
> by humans:
>
> (setq mail-host-address "barry_fishman.att.net")

What does gnus do with this information?

> Which is my ISP username grafted into its network domain.
> I then convince the message package to use it, and not send any
> sender field:
>
> (setq gnus-local-domain "att.net")

Ditto here.  

> ;; I don't really have valid FQDN information so clean up header
> (setq message-syntax-checks '((sender . disabled)))

with this done, what fields are effected by your other settings?

> ;; Makes sure (message-make-fqdn) uses mail-host-address when we
> ;; are on the .local network.
> (setq message-bogus-system-names "^localhost\\.\\|\\.local$")

What is the advantage of this?

With sender disabled, is the only field being effected the rhs of
message id?

Does this accomplish the same things:

  (defun message-make-fqdn ()
    "My  hacked message-id."
    "reader.newsguy.com")