Re: [exim] Outgoing From header field format

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Author: Andrew C Aitchison
Date:  
To: AC
CC: exim-users
Subject: Re: [exim] Outgoing From header field format
On Thu, 12 May 2022, AC via Exim-users wrote:

> What configuration within exim defines how the outbound From header is
> formatted?
>
> What I mean is whether the header has just an email:
> user@???
>
> vs. a name and email in brackets:
> A User <user@???>
>
>
> I'm asking because I have several machines that send nightly status
> messages where only a couple of the machines send with the second format
> (specifically it sends out: root <root@host>) while the others simply send
> out root@host.


I suppose exim may do something with that line, but the default
is likely to be to pass on exactly what it is given, although
how it receives the message (eg. by SMTP or as standard input
to an instance of exim started by the process that generated
the message) might make a difference.


> All but one machine is configured to use a smarthost. Of those satellite
> machines, all but one sends out using the name/email format and uses only
> my domain (full format is "root <root@domain>). The one satellite machine
> simply sends out "root@domain" without a name. The smarthost itself also
> sends out its own messages but it uses root@??? with no name.
>
> The same programs run on all the machines (file system checks, antivirus,
> etc.) so they would all be using the same outgoing message format. I've
> tried to compare the exim configurations of the satellite hosts and they
> all seem to be using the same settings. The /etc/passwd files all look
> the same for the root account.
>
> It's not affecting mail delivery but it's just odd that the machines are
> somehow slightly different and I'd like to understand it better (and
> partially because it bothers me to see a list of emails that have slightly
> different From headers but that's just an OCD thing).


-- 
Andrew C. Aitchison                    Kendal, UK
             andrew@???