Hi Peter,

> A week ago Terry sent Tim and me this message:
>
> "I am wondering why you both have the Reply-To Address in your list
>  messages set to your own address, rather than being blank.  This
>  means that all replies to your messages will go only to you and not
>  the list and places the onus on the responder to change the To
>  Address, which I invariably forget."
>
> Both Tim and I have multiple email addresses set up in Thunderbird. In
> the configuration for the one that I use for the LUG, the 'Reply to
> Address' setting is blank.
>
> In the Full text of the email that Terry attached as relevant data,
> This is the line that he means:
>     From: PeterMerchant via dorset <dorset@mailman.lug.org.uk>
>     Reply-To: PeterMerchant <madsmad...@talktalk.net>
...
> Terry uses Kmail.

I know Terry's KMail is normally the fount of all kproblems, but this
time it's the list's configuration for coping with the DMARC
configuration of your sending domain, and presumably Tim's too.
http://www.list.org/mailman-admin/sender-filters.html describes
dmarc_moderation_action that the Dorset list has set to `Munge From'.

    $ dig +short _dmarc.talktalk.net. txt
    "v=DMARC1; p=quarantine; fo=1; rua=mailto:4lqga...@ag.dmarcian.com;
        ruf=mailto:4lqga...@fr.dmarcian.com;";

Some anti-spam measures were invented without regard for a mailing
list's requirement to re-send on the email.  Thus the LUG's mailman
can't impersonate you and must instead pass on your email in some other
way.  https://wiki.list.org/DEV/DMARC describes why and the options.

Yes, this means Terry must check where his emails are going, but then
that's a good habit to get into on every email, and the MUA should make
it obvious and easy to edit.  ;-)

Cheers, Ralph.

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