4
records
Certificate Authority Authorization
TTL
No CAA records were returned at this registrable domain name. With no CAA policy, any public certificate authority (CA) may issue TLS certificates for names under this zone unless a parent publishes CAA; add issue / issuewild / iodef records to restrict issuance.
DMARC
TTL
No DMARC TXT record was returned (expected at `_dmarc.<domain>` with `v=DMARC1`). Without DMARC you cannot publish receiver policy or standard aggregate failure reports (RUA).
DKIM
TTL
No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.
SPF (Sender Policy Framework)
TTL
SPF
SPFv1
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| - Fail | all |
—
|
|
20m
4255.cn.com. 1200 IN TXT "v=spf1 -all"
MTA-STS
TTL
This hostname does not publish an MTA-STS policy (no v=STSv1 TXT at _mta-sts.<name> and/or no policy at https://mta-sts.<name>/.well-known/mta-sts.txt).
DNSSEC Signatures
TTL
RRSIG
MX 13 2 3600 1792661364 1790063964 13079 cn.com PvdOxeZPsn3IC2xD16ik4m5Quy5P1Bh7nXwvKcxQgyHllQ0lP+QY6orc2V6QuQzHsfbA02VF2SZCrRQHnsGLuQ==
20m
RRSIG
MX 7 2 3600 1792056209 1789458809 33740 cn.com RNqYT4KOn5jjhQjW73sLDrFixlddudOLOnMGTxX3vIOanf5EvoODfIvizRosKrm3GO66RdAiE6RLqtApWoWqCBvIFGdrklQBm8FD73mV1j3DdGO/9D37OoWWYUF0fRGqWJL+FNZS4WdGZXADT/T4doGfdbgx4MvOr90BDIZlzVY=
20m
4255.cn.com. 1200 IN RRSIG MX 13 2 3600 1792661364 1790063964 13079 cn.com PvdOxeZPsn3IC2xD16ik4m5Quy5P1Bh7nXwvKcxQgyHllQ0lP+QY6orc2V6QuQzHsfbA02VF2SZCrRQHnsGLuQ== 4255.cn.com. 1200 IN RRSIG MX 7 2 3600 1792056209 1789458809 33740 cn.com RNqYT4KOn5jjhQjW73sLDrFixlddudOLOnMGTxX3vIOanf5EvoODfIvizRosKrm3GO66RdAiE6RLqtApWoWqCBvIFGdrklQBm8FD73mV1j3DdGO/9D37OoWWYUF0fRGqWJL+FNZS4WdGZXADT/T4doGfdbgx4MvOr90BDIZlzVY=