IPv4 Addresses

TTL

Name Servers

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Mail Servers

TTL

SOA Details

TTL
20m
SOA Responsible
awsdns-hostmaster.amazon.com
SOA Serial
1
SOA Times
Refresh 2h
Retry 15m
Expire 14d
Minimum TTL 1d

Certificate Authority Authorization

TTL

DMARC

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DMARC Policy

Organizational policy (p): how receivers treat mail that fails aligned DMARC checks — none (monitor only), quarantine (often junk), or reject (block).

none quarantine reject
20m
DMARC Subdomain Policy

Subdomain policy (sp): when set, it applies to hostnames below this domain instead of p; if omitted, subdomains inherit the organizational policy.

none quarantine reject
DMARC Percentage

pct: share of mail that gets quarantine/reject; 100 = all failing messages (default).

100
DMARC RUA

Aggregate DMARC reports (ZIP/XML). Optional but recommended for visibility.

DMARC RUF

Forensic (per-failure) reports. Often omitted for privacy or volume.

DKIM

TTL

No DKIM TXT with `v=DKIM1` was returned for the selector names we probe automatically.

SPF (Sender Policy Framework)

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SPF SPFv1
Qualifier Mechanism Target / value Valid Details
+ Pass include
- Fail all
5m

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).

Text Content

TTL
MS=ms52685493
5m
cisco-ci-domain-verification=50e577b4a0a3a802137e67344a7f8824f88a02102b2248f3a9f1cbefebee8d2c
5m
slack-domain-verification=RmQwrWyuSOjPV8HU5no7pTZeiH3QuWCQjup5aEOz
5m
TXT
EC0F-F4B1-3B5B-CC50-5CE7-66A4-2F3D-B61B
5m
TXT
Jcj7ubqYKPqkZmQuFz64y0V+n1Poab/1BNyXiHy9+/syxoGwDgMpsX4ugstBkok8kvT59598/aRY1NKY01dSqw==
5m