Yes I have and I just got one.

"This message may not have been sent by: dhanson928@gmail.com "

I was wondering the same thing. Why now all of a sudden?

Bernie

On Sat, Apr 26, 2014 at 7:44 PM, Don Hanson <dhanson928@gmail.com> wrote:

>   Has anybody else recently began getting these Gmail  "!Warning! May not
> have been sent by ____________......" message headers with a lot of vanagon
> list  emails?   They began appearing a few days ago,  on top of lots of the
> posts from Vanagon List that I've been getting.  Gmail has a convoluted
> explanation in a drop down menu that I don't follow, being a
> cyber-challenged...I  don't think I have changed anything in my settings to
> cause these highlighted headers to began appearing...but ....?
>
>   Don Hanson
>