DMARC not working

I am trying to add a DMARC to DNS since my emails continue to bounce from Yahoo. However, whenever I do a test on any platform it shows there is no DMARC record. Below is the record I added a week ago and I would think it would’ve been propagated by now but not showing up in any tests (I’ve done several websites including MXTools). Can anyone help me with this because Yahoo refuses to deliver/receive any of our emails.

_dmarc 60s IN TXT “v=DMARC1; p=quarantine; pct=100; ruf=mailto:vp71xejq@ag.us.dmarcian.com; rua=mailto:vp71xejq@ag.us.dmarcian.com; fo=1; adkim=s; aspf=s”

Propagation time isn’t a thing for a record like this. Total “propagation time” for any correctly configured resolver for a record like this would be the TTL, probably five minutes, at maximum. If DNS is broken after five minutes, it’s misconfigured.

The core problem isn't your DMARC setup, it's that your nameservers are unreachable. You need A records for ns1 and ns2.chappyis.com at your registrar. For generating the record itself, I found the https://www.inboxally.com/dmarc-record-generator/ easy to use for checking syntax before fixing the DNS zone file.