Port25 Support Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

BREAKING NEWS: PowerMTA 5.0 beta is out!!!!  Please contact support@port25.com for a license and download access.

Author Topic: DMARC and subdomains  (Read 7075 times)

sparkintern

  • Full Member
  • ***
  • Karma: +6/-3
  • Posts: 118
DMARC and subdomains
« on: February 11, 2016, 01:05:01 PM »

Hi All,

I have a question regarding dmarc records and subdomains.

In most of my scenarios, I've created a dmarc txt record at the parent domain level/zone file. However, this time around, a client has delegated a subdomain on our behalf.

We do not want to interfere with the top level domain.

I found this example from here
https://agari.zendesk.com/hc/en-us/articles/202952819-Using-a-Subdomain-Policy-with-DMARC

_dmarc.subdomain.example.com

"v=DMARC1;p=reject;rua=mailto:yourorg@rua.agari.com;ruf=mailto:yourorg@ruf.agari.com;"

I believe it is correct but I wanted to see how the rest of community would handle this.
Logged

CaLViN

  • Hero Member
  • *****
  • Karma: +41/-0
  • Posts: 1233
  • Hasan Kurtoglu
    • PowerMTA Administration Service
Re: DMARC and subdomains
« Reply #1 on: February 11, 2016, 02:18:00 PM »

So you want to have different DMARC records for subdomain and main domain ? Or just the same ?
Logged

Professional PowerMTA Administrator - Deliverability Expert

Contact me for Consultancy needs!

sparkintern

  • Full Member
  • ***
  • Karma: +6/-3
  • Posts: 118
Re: DMARC and subdomains
« Reply #2 on: February 11, 2016, 04:58:10 PM »

Yes, we do not want have anything to do with the main domain. So, specifically controlling the subdomain.
Logged

CaLViN

  • Hero Member
  • *****
  • Karma: +41/-0
  • Posts: 1233
  • Hasan Kurtoglu
    • PowerMTA Administration Service
Re: DMARC and subdomains
« Reply #3 on: February 11, 2016, 05:03:53 PM »

Well you are good to go then.
Logged

Professional PowerMTA Administrator - Deliverability Expert

Contact me for Consultancy needs!

jobeck

  • Jr. Member
  • **
  • Karma: +2/-2
  • Posts: 16
Re: DMARC and subdomains
« Reply #4 on: February 11, 2016, 05:09:49 PM »

Yep, that's how we do it too.
Logged

sparkintern

  • Full Member
  • ***
  • Karma: +6/-3
  • Posts: 118
Re: DMARC and subdomains
« Reply #5 on: February 12, 2016, 11:45:26 AM »

Excellent! Thanks team.
Logged