On Thu, Feb 1, 2018 at 1:14 PM, John Meissen <[email protected]> wrote:

> On Thu, 1 Feb 2018, Michael Rasmussen wrote:
>
> > Mailman will help with that. Send an email to
> > <listname>[email protected] with a message subject of unsubscribe.
> You
> > don't mention that listname.
>
> Won't help. ledger123.org doesn't have an MX record associated with it, so
> there's no way to send email to the domain.
>

I also noticed this, so I went digging into some sites that have dns and
whois histories but didn't come up with anything useful.  I checked out the
site in archive.org and found that the mailing list used to be hosted on
the ledger123.com domain.  It's likely the person switched to the .org
domain so he could point the MX for the .com domain at google's mail
services, because that's where it's pointing to now.

The .com domain is still being hosted by linode and the host still has an
smtp server running.  I'm guessing that's where the mail is coming from
(45.33.84.65), but you would need to check the email headers from an email
you've received from the list to confirm.

If that's where the email is originating, I believe you host your own mail
server, so you can add that "45.33.84.65 ledger123.org" to your mail
server's /etc/hosts file and try to send an email.  If you didn't host your
own mail, you could use a script to send an email directly to the server,
such as:
https://stackoverflow.com/questions/10008277/sending-mail-via-smtp-in-perl#10008814
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