Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
u4sd.org
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-04 23:43:20 UTC · ↺ Refresh
MX Hostnames
- mxb.global.inbound.cf-emailsecurity.net
- mxa.global.inbound.cf-emailsecurity.net
MX Priorities
- mxb.global.inbound.cf-emailsecurity.net: 10
- mxa.global.inbound.cf-emailsecurity.net: 10
A / AAAA Records
- 216.239.38.21 ↩ any-in-2615.1e100.net
- 216.239.36.21 ↩ any-in-2415.1e100.net
- 216.239.34.21 ↩ any-in-2215.1e100.net
- 216.239.32.21 ↩ any-in-2015.1e100.net
Mail Server IPs
- 172.65.64.78 (no PTR)
- 141.101.90.40 (no PTR)
SOA Record
Raw SOA
liz.ns.cloudflare.com dns.cloudflare.com 2399563238 10000 2400 604800 1800
Primary NS (mname)
liz.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399563238
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
liz.ns.cloudflare.com
noel.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:amazonses.com include:customerspf.schoolmessenger.com include:swiftreach.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=25
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 25% of failing messages only
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._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
13 records- 11.03.2024
- MS=0FDB76054E7088438410F0716E9A2E4D01FE7144
- MS=ms28842097
- MS=ms60986025
- ZOOM_verify_I91tAwh4QhaHpoDVbB4Jfg
- adobe-idp-site-verification=8319cb2ee5358dd132d0308fd65da902f0d1a1d1c5f26cadb0770ff219dc8824
- apple-domain-verification=GjmNnKRCgxjMXpCS
- duo_sso_verification=SZFaEbV2Fghtbc9mUlAO0ZMGHgnNEBQh6YHyZUoEnih9F6ZPsNloUuLxWFNzgygH
- google-site-verification=9mq2ZKEnt76N692SuOROczRBl96QJFsBLPtoxEEZ5K0
- jamf-site-verification=Akhlfi6aeJDEvlK5BFn1Ag
- jamf-site-verification=HPABLjmomASE-ii_Xyekaw
- teamviewer-sso-verification=ecf278d131f54679942b45e9f4b80181
- SPFv=spf1 include:_spf.google.com include:amazonses.com include:customerspf.schoolmessenger.com include:swiftreach.com ~all
Full email verification for u4sd.org
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