Hello, I have an exchange 2013 server and I got an email rejection from comcast and other cloud email hosts saying
westchester.pa.mail.comcast.net gave this error:
LjQG1o00K0YnGZu0RjQHiw Message rejected due to DMARC. Please see http://postmaster.comcast.net/smtp-error-codes.php#DM000001
when I go to this link I get this
DM000001
:: Mail to Comcast is rejected and is returned with an error message
containing the code DM000001. What does this mean?
This message has been rejected by the Comcast mail servers due to the
sending domain's published DMARC policy. The sending domain has
published a DMARC reject policy and this message has not passed either
DKIM or SPF authentication for the domain. For more information on
DMARC
I was the one to build the exchange server and I never published a DMARC policy, is there a default policy somewhere in...