Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
criterion.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 23:18:44 UTC · ↺ Refresh
MX Hostnames
- alt1.aspmx.l.google.com
- aspmx5.googlemail.com
- aspmx4.googlemail.com
- aspmx2.googlemail.com
- alt2.aspmx.l.google.com
- aspmx.l.google.com
- aspmx3.googlemail.com
MX Priorities
- aspmx.l.google.com: 10
- alt1.aspmx.l.google.com: 20
- alt2.aspmx.l.google.com: 20
- aspmx2.googlemail.com: 30
- aspmx3.googlemail.com: 30
- aspmx4.googlemail.com: 30
- aspmx5.googlemail.com: 30
A / AAAA Records
- 172.66.43.66 (no PTR)
- 172.66.40.190 (no PTR)
- 2606:4700:3108::ac42:2b42 (no PTR)
- 2606:4700:3108::ac42:28be
Mail Server IPs
- 172.253.63.27 ↩ bi-in-f27.1e100.net
- 2607:f8b0:4004:c21::1b ↩ pe-in-f27.1e100.net
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
SOA Record
Raw SOA
donovan.ns.cloudflare.com dns.cloudflare.com 2396874536 10000 2400 604800 1800
Primary NS (mname)
donovan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396874536
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
donovan.ns.cloudflare.com
serenity.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:mailgun.org ip4:72.46.233.164 ip4:64.90.180.59 ip4:167.206.4.0/22 ip4:74.201.255.11 include:_spf.google.com include:servers.mcsv.net ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 1 found
k1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: k1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 a mx include:mailgun.org ip4:72.46.233.164 ip4:64.90.180.59 ip4:167.206.4.0/22 ip4:74.201.255.11 include:_spf.google.com include:servers.mcsv.net ~all
- google-site-verification=dlCxmPh7hANd93GYc3JRFCjD1vIdiy4qy5IyBSorzsY
- google-site-verification=oEWEYCM32OcZJSOXVbV9T2D0bYfPnCkNEU4sLYkk7II
Full email verification for criterion.com
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