I'm still learning infrastructure stuff and need to ask a question which relates to DMARC. A user in the organisation has an app which is sending marketing messages to staff within the business. The messages leave the network and come back in, but are detected as SPAM.
I have had a look and it seems that we would need to get the IP address of the source to be whitelisted through DMARC.
We have a DMARC record on external DNS and we have a DKIM policy. I can verify this from a combination of using online checker tools, the message headers from an email and looking at the DNS records. Does this mean that in order to allow the messages from the user's app, I will only need to add the IP address of the source to the SPF record?
Is there more steps involved? If so, would someone be king to point me in the right direction please?
UPDATE:
I had a look at the Dynamics 365 Marketing app and it there was a message suggesting to look at the article below:
https://docs.microsoft.com/en-gb/dynamics365/marketing/mkt-settings-authenticate-domains
I got the user to go to "Settings > Advanced settings > Marketing settings > Authenticated domains" in dynamics and they have added the domain for the organisation.
This generated the DNS records that need to be added.
What I am confused about is that the txt record has a host name of the top level domain of the organisation. If I add that to the DNS Zone in Azure will it cause any problems or issues with the mail flow or anything else?
0 Answers