From: René Scharfe <l.s.r@web.de>
Date: Sun, 23 Aug 2015 09:35:52 GMT
Subject: Eric Sunshine mail delivery failure
Message-ID: <55D993F8.4080506@web.de>
In-Reply-To: <trinity-6e67d416-0a61-4e73-9779-63519dd83fdb-1440322151491@3capp-webde-bs47>

Eric, hope you see this reply on the list. Direct replies to 
sunshine@sunshineco.com are rejected by my mail provider on submit in 
Thunderbird with the following message:

     Requested action not taken: mailbox unavailable
     invalid DNS MX or A/AAAA resource record.

And with this one when using their web interface:

     A message that you sent could not be delivered to one or more of
     its recipients. This is a permanent error. The following address
     failed:

     "sunshine@sunshineco.com":
     no valid MX hosts found

It seems web.de wants you to get an AAAA record before I'm allowed to 
send mails to you.  Sounds crazy.  Sorry about that.  Time to find a
better provider, I guess. :-(

René