IPv4 Addresses
mail-cert.com. 1200 IN A 52.210.14.27
Name Servers
mail-cert.com. 1200 IN NS nsb1.mailcomms.net. mail-cert.com. 1200 IN NS nsb2.mailcomms.net. mail-cert.com. 1200 IN NS nsb3.mailcomms.net. mail-cert.com. 1200 IN NS nsb4.mailcomms.net.
SOA Details
mail-cert.com. 900 IN SOA nsb1.mailcomms.net. hostmaster.mailcomms.net. 1 7200 900 1209600 86400
Certificate Authority Authorization
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
Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).
Subdomain policy (sp): when set, it applies to hostnames below this domain instead of p; if omitted, subdomains inherit the organizational policy.
pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).
100Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.
Forensic (per-failure) reports. Often omitted for privacy or volume.
mail-cert.com. 1200 IN DMARC v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r
DKIM
No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.
SPF (Sender Policy Framework)
| Qualifier | Mechanism | Target / value | Valid | Details |
|---|---|---|---|---|
| + Pass | mx |
—
|
|
|
| - Fail | all |
—
|
|
mail-cert.com. 1200 IN TXT "v=spf1 mx -all"
MTA-STS
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).
Text Content
mail-cert.com. 1200 IN TXT "google-site-verification=M1mMhYjztvDN2D359_JsDFD8pWOCAY1l6CAt4VXA_D8"