Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fourtheorem.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 09:21:26 UTC · ↺ Refresh
MX Hostnames
- aspmx2.googlemail.com
- aspmx3.googlemail.com
- alt1.aspmx.l.google.com
- aspmx.l.google.com
- alt2.aspmx.l.google.com
MX Priorities
- aspmx2.googlemail.com: 10
- aspmx3.googlemail.com: 10
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- aspmx.l.google.com: 1
A / AAAA Records
- 35.195.94.61 ↩ 61.94.195.35.bc.googleusercontent.com
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 142.251.167.27 ↩ ww-in-f27.1e100.net
- 2607:f8b0:4004:c09::1a ↩ bh-in-f26.1e100.net
SOA Record
Raw SOA
ns-1757.awsdns-27.co.uk awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1757.awsdns-27.co.uk
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1757.awsdns-27.co.uk
ns-447.awsdns-55.com
ns-979.awsdns-58.net
ns-1426.awsdns-50.org
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; pct=100; adkim=s; aspf=s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
google._domainkey
✓ Public key: 392 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
4 records- MS=ms86381573
- canva-site-verification=Q0tutXOR6qTid-MwNcDBSA
- google-site-verification=qLKpZwej3XS2333UPR-oiLwAppVmTMIn9XiF-g-z5O4
- SPFv=spf1 include:_spf.google.com include:spf.protection.outlook.com ~all
Full email verification for fourtheorem.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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