On 10/13/23 6:38 PM, Alessandro Vesely via mailop wrote:
I suspect they tried to put a filter on port 53 too, to avoid too many
queries, and filter off _dmarc because it is an invalid host. Sounds
real?!?
hi,
well, it's not related to DMARC; they seem not answering queries for any
NX domain
That's strange. The same server replies on one query but not the other:
ale@pcale:~$ dig +short +norecurse @158.74.30.103 bounce.connect.hhs.gov txt
"v=spf1 ip4:158.72.139.19 ip4:158.70.144.146 include:cust-spf.exacttarget.com
-all"
ale@pcale:~$
ale@pcale:~$ dig +short +norecurse @158.74.30.103
