> On Apr 30, 2015, at 6:58 AM, John Mears <[email protected]> wrote:
>
> The rfc5321.MailFrom is empty:
> MAIL FROM:<>
>
> The ehlo field presented to the recipient from the third party relay contains
> the domain of the third party:
> EHLO thirdparty.org <http://thirdparty.org/>
For SPF to pass you can put a record on the domain (thirdparty.org
<http://thirdparty.org/>) of the HELO, but this will not align with
senderorg.com <http://senderorg.com/>
see the definition of RFC7208.MAILFROM and
https://tools.ietf.org/html/rfc7208#section-10.1.3
>
> The from header contains the original sender's email address:
> From: John Doe <[email protected]>
>
What may work, is to get dedicated sending IPs at the third party relay and ask
them to put in the HELO a domain aligned with senderorg.com
<http://senderorg.com/>, otherwise DKIM sign the bounces. Note that
postfix/sendmail can DKIM sign the bounces it creates.
_______________________________________________
dmarc mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/dmarc
