Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tacitknowledge.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 00:40:47 UTC · ↺ Refresh
MX Hostnames
- aspmx2.googlemail.com
- aspmx3.googlemail.com
- aspmx.l.google.com
- alt1.aspmx.l.google.com
- alt2.aspmx.l.google.com
MX Priorities
- aspmx.l.google.com: 10
- alt2.aspmx.l.google.com: 25
- alt1.aspmx.l.google.com: 25
- aspmx3.googlemail.com: 50
- aspmx2.googlemail.com: 50
A / AAAA Records
- 34.121.101.56 ↩ 56.101.121.34.bc.googleusercontent.com
Mail Server IPs
- 142.251.167.27 ↩ ww-in-f27.1e100.net
- 2607:f8b0:4004:c0b::1b ↩ bj-in-f27.1e100.net
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
SOA Record
Raw SOA
ns-cloud-c1.googledomains.com cloud-dns-hostmaster.google.com 1 21600 3600 259200 300
Primary NS (mname)
ns-cloud-c1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
1
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s
Nameservers (NS)
ns-cloud-c2.googledomains.com
ns-cloud-c1.googledomains.com
ns-cloud-c3.googledomains.com
ns-cloud-c4.googledomains.com
SPF Record
✓ Strict (-all)
v=spf1 include:_spf.google.com include:sendgrid.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
9 records- lucid-validation-BS3eZ1IwRkeeO2Kwn2Z6
- atlassian-domain-verification=s8yvN9ySjkXb3QUa38p0+OVeiyUb/Y71kGW9FRptOKRomDKwGB7rQUch1hZmWykE
- MS=31C53EF22CD0208B935EB470CB81D559727F906B
- google-site-verification=ueeaaxvfdsbw7ru-SBBTWF99IZtPPAoHgYbMaSfn_-0
- google-site-verification=JlTlq1CmKJZR8VGFSPcuXnWLeJqaOdK7K0TRZRcNMkI
- google-site-verification=Ny5yLjWh3Se5SlCyauxsFGWLJPR5hw4Nd7kNBU3AaUc
- SPFv=spf1 include:_spf.google.com include:sendgrid.net -all
- apple-domain-verification=7KSfOA67uXnbAept
- google-site-verification=R5bDRfZfQpQllMyJh0dGxXAdML1ChYg9oELoCP9HW88
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