DMARC

Please have in mind these are field notes organized in a common structure that I use for myself or for my students, university classes and industrial activities. They may be messy, with errors and in some cases, without proper references. If you find your work (or part of it) here without proper acknowledgement, please let me know so I can fix it as soon as possible.

I've used DMARC as a TXT record on a DNS configured like this:

Name: 1_dmarc.example.com (or just _dmarc for GoDaddy)

Value: 1v=DMARC1; p=none; rua=mailto:dmarc-reports@example.com

where:

v: is the version of DMARC

p: Instructs the receiving mail server what to do with messages that don’t pass authentication. In this case, we want to log messages in a daily report and send it to rua address.

rua: Email address to receive reports about DMARC activity for your domain.

Significant Revisions

Apr 3, 2022: Original publication on dariomac.com