mailing list. For example. mail from mari...@yahoo.com turns into
mari...@yahoo.com.dmarc.fail.
Except that @yahoo.com.dmarc.fail is not a domain that exists, and will
negatively impact the email deliverability.
Why in the world would you say that? It not only exists, it's DNSSEC
signed which is more than you can say about linkedin.com.
Forwarding email addresses in yahoo.com.dmarc.com exist for a couple of
days after someone at the corresponding yahoo.com address sends mail
through any of my mailing lists, same for any other address in a domain
with a DMARC policy.
R's,
John
; <<>> DiG 9.8.3-P1 <<>> yahoo.com.dmarc.fail mx +dnssec
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30940
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 6, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;yahoo.com.dmarc.fail. IN MX
;; ANSWER SECTION:
yahoo.com.dmarc.fail. 3585 IN MX 20 mail1.iecc.com.
yahoo.com.dmarc.fail. 3585 IN RRSIG MX 8 2 3600 20160403000000
20160201054514 58563 dmarc.fail.
IZIPS60KsnOEFMX/gYo/3o8zzlIzfhFTrmo2IkbKMLWoWQPIAwXLZRDk
jXXmymrxYSJ1k3yUUVztCSKzDBWFu4WvYiUwpc9NbG3v7DdN1OwUkxcM
RgjmqjMxwPcQI1RFoJkgPD1V3azJDOV/f73bd4HPimVD5r6SP/s/v3gc 1s8=
;; AUTHORITY SECTION:
*.k1602._domainkey.dmarc.fail. 7185 IN NSEC dmarc.fail. TXT RRSIG NSEC
*.k1602._domainkey.dmarc.fail. 7185 IN RRSIG NSEC 8 4 7200 20160403000000
20160201054514 58563 dmarc.fail.
Ue/IR/Gdy4DJHsEJgToONRMP9j5Skyf8hxIHCCGPTyNc+URgtJFDpilS
21MTC7zuCIt4fIKV8x428VJDzg2fZzMFQNDuMmtvs8aLMVL6TGAfKlVQ
NjbYowFrS6g5xTFpkm5SdJmNnLreymuVksVFeniO2Td2+bn2Vvr7hzfc iAw=
dmarc.fail. 1429 IN NS sdn.iecc.com.
dmarc.fail. 1429 IN NS osdn.iecc.com.
dmarc.fail. 1429 IN NS light.lightlink.com.
dmarc.fail. 1429 IN RRSIG NS 8 2 3600 20160403000000
20160201054514 58563 dmarc.fail.
sZOP1+0qp3pCrk0l9VcEivHak4+v2I32jp9m6iysYTO49m6s6qadiyIy
I3O21vr4Tk5V+XoN9F/zaIctT4nvDH2mIiDN24cB2uGb05zRg809ars5
WqOOBCBkYiKJUNi95LmZ0W2VCXqVwTxEYLC4r9EFoBGEm/dloDcWVjG7 Z6A=
;; Query time: 0 msec
;; SERVER: 192.168.80.2#53(192.168.80.2)
;; WHEN: Sun Feb 7 15:57:10 2016
;; MSG SIZE rcvd: 707
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