Well I just did it one step at a time :). First "p=none", then "p=reject
sp=none" and finally "p=reject". I guess I could have done it straight
from p=none to reject.
Regards
Petr
Dne 13.12.2016 v 4:05 Roland Turner via dmarc-discuss napsal(a):
Surely all of that subdomain sending information would have been
visible to you in aggregate DMARC reports within days of publishing a
p=none record for the parent domain, long before you reached the
point where you could safely switch to p=reject?
- Roland
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