[dmarc-discuss] dmarc Newbie

Roland Turner roland at rolandturner.com
Thu May 9 18:57:58 PDT 2019

Hi Andrew,

The first question is what you're seeing in the aggregate feedback 
reports (Dmarcian, Agari, etc. provide the means to do this). These 
should be watched for a period of time (I'd suggest weeks) to ensure 
that all is well before you turn on p=reject. The most important new 
capability that DMARC provides over previous approaches is this ability 
to see what's happening in receiving environments and to correct errors 
in your configuration (or your understanding of how your domain is used) 
before you adopt a stricter policy.

- Roland

On 10/5/19 1:55 am, Wojtowicz, Andrew via dmarc-discuss wrote:
> I’m a newbie with dmarc.  I’ve been playing around with some 
> generators and I thought I had it setup right but found out today one 
> of my staff members sent out an notification email, that uses 
> blackboard, and it didn’t go to all gmail and yahoo users.
> Saw this message in log..
> SMTP error from remote mail server after pipelined end of data: 
> 550-5.7.1 Unauthenticated email from /(My domain)/ is not accepted due 
> to\n550-5.7.1 domain's DMARC policy. Please contact the administrator 
> of\n550-5.7.1 /(My Domain)/ domain if this was a legitimate mail. 
> Please visit\n550-5.7.1 https://support.google.com/mail/answer/2451690 
> <https://support.google.com/mail/answer/2451690> to learn about 
> the\n550 5.7.1 DMARC initiative. z37si617489qvc.90 - gsmtp
> Where can I get some help on setting up the correct dmarc dns setting?
> Thank you
> Andrew Wojtowicz
> Network Engineer
> Tenafly Public Schools
> 500 Tenafly Rd
> Tenafly, NJ 07670
> Work - (201) 816-4555
> Cell – (201) 563-9661
> Email - awojtowicz at tenafly.k12.nj.us <mailto:awojtowicz at tenafly.k12.nj.us>
> shield logo (Custom) (2)
> /NOTICE: This email message, including any attachment(s), is for the 
> sole use of the intended recipient and may contain confidential and 
> privileged information. Any unauthorized review, use, disclosure or 
> distribution is prohibited. If you are not the intended recipient, 
> please contact the sender by reply email and destroy all copies of the 
> original message. /
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