Thanks.

On 6/8/2012 9:59, Eric Shubert wrote:
> It looks to me as though Verizon is using yahoo to host their email 
> services:
> mta1012.vzn.mail.ac4.yahoo.com
>
> yahoo has always had some pretty sticky anti-spam rules. My guess is 
> that they're adjusting some things, and the dust hasn't settled yet. 
> yahoo has so many mail servers that it's quite possible to see 
> inconsistent behavior from one message to the next, depending on which 
> servers process the message.
>
> Trying to send from a different domain/server is a good suggestion, 
> short of running your own mail server (where you have much more 
> control of things).
>