Re: mail @example.com without dns a-record for example.com

Salvador Mirzo <smirzo@example.com> writes:

[...] What stopped working for me is my IMAP client that
for some reason is not seeing the messages arrive after I deleted the
a-record of antartida.xyz, but then I tried another client and it sees
them all, so it's a client (Gnus) configuration issue.  (That's
another investigation I need to make, but it's not important.)  I
apologize for the confusion.

I had two fetchmailrc (for no good reason) and I updated the wrong one.
After finding the right one and updating the hostname to
mx.antartida.xyz, I also had to get a new certificate to match the new
hostname.  Then my fetchmail was able to pull mail once again and
deliver it to my IMAP server to tell Gnus (my reader) that I indeed have
new mail.  (Yes, I plan to simplify this as soon as possible.  I need to
learn more about everything.)