here is the complete explanation... a canned email I've used for a long time that fills in all the blanks about warning messages...  I hope this helps......

"""

These warning messages are generated by the LML listserver anytime an LML message is bounced back to it.  They are used to detect inactive email address... after 5 of these warnings go unanswered the email address in question is unceremoniously removed from the subscription rolls, ostensibly because the email address is no longer valid.  The bounces may be caused by delays in your ISP's mail server, by an outage in a router somewhere between here and there, or just a clog in the internet backbone somewhere along the way.  The only time they are the fault of the recipient is if his email server is volume limited and the the subscriber fails to empty his email box on a regular basis.  Regardless of the reason, dealing with these warnings is an extremely simple matter... whenever you get one, just reply to it.  You don't need to write anything into the message, you don't need to modify the address or any of the headers, just hit the reply button and send off whatever it is that shows up in your reply editor... all the listserver is looking for is the reference number contained in the subject box of the headers.  After you've sent the reply on its way, simply delete the original message and go on about your business.  With most email programs, taking the necessary steps to address one of these warnings typically takes no more than a few seconds... reply, send, delete.  That's it.  Failure to reply to at least one in five of these messages will result in your LML subscription being removed.

If the reply, send, delete option is too much to ask, then your only other option is to remove your normal subscription, switch to the null mode and do your reading of the LML on the website archives.  The null mode stops all deliveries of LML emails to your mailbox but retains your email address as a valid one for posting purposes.  The decision is up to you.   The one thing I can't do is make the warnings stop as long as you're a regular subscriber. They happen, it's just a fact of life.  Sorry about that.
"""

   <Marv>

 "Ed Anderson" <eanderson@carolina.rr.com> wrote:

> This is a automated culling of emails by the moderator of those no longer
>active on the Fly_Rotary list.  Not a scam.  Generally, a bounced message (or
>a certain number of them) will get your email automatically deleted from the
>roster.  If your email responds then the “bounce count” zeros out and you
>remain on the list.  Sometimes there seems to be bounces for no clear reason.
> IF you do get deleted from the roster, you can re-subscribe.
>
> Ed
>
> Edward L. Anderson
> Anderson Electronic Enterprises LLC
> 305 Reefton Road
> Weddington, NC 28104
> http://www.andersonee.com
> http://www.eicommander.com
>
>
>From: alex
> Sent: Sunday, April 27, 2014 7:01 PM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Fwd: WARNING! (0787361580)
>
> Is this a scam or what's going on
>
> Alex
> RX8 in a tango xr
>
>
> ---------- Forwarded message ----------
>From: "flyrotary administration" <flyrotary-subscribe@lancaironline.net>
> Date: Apr 27, 2014 10:43 PM
> Subject: WARNING! (0787361580)
> To: "alex" <alex.molteno@gmail.com>
> Cc:
>
> This is an automated message from the
>  <flyrotary@lancaironline.net> mailing list manager
>
> List messages sent to your address <alex.molteno@gmail.com> have bounced.
>
> If you read this message, your mail system has been probably fixed.
>
> To clear the bounce counter and to prevent automatic cancelation of
>  your subscription, use the Reply command in your mailer.
>
> Check that the Subject of the reply message contains
>  the confirmation ID: 0787361580,
>  and the reply is directed to <flyrotary-subscribe@lancaironline.net>,
>  and the 'From' address of your reply is <alex.molteno@gmail.com>.
>
> All requests about this mailing list
>  should be sent to <flyrotary-request@lancaironline.net>
>
>
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2013.0.3469 / Virus Database: 3722/7402 - Release Date: 04/27/14