Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ceu.aero
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-26 23:53:05 UTC · ↺ Refresh
MX Hostnames
- CEU-AERO.MAIL.PROTECTION.OUTLOOK.COM
MX Priorities
- ceu-aero.mail.protection.outlook.com: 0
A / AAAA Records
- 23.251.159.16 ↩ 16.159.251.23.bc.googleusercontent.com
Mail Server IPs
- 52.101.40.2 ↩ mail-cy1pr05cu00402.inbound.protection.outlook.com
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f908:: ↩ mail-bn1pr21cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f910:: ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.101domain.com admin.ceu.aero 2017040440 3600 3600 604800 3600
Primary NS (mname)
ns1.101domain.com
Admin Email (rname)
admin@ceu.aero
Serial
2017040440
Refresh
3600s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns5.101domain.com
ns1.101domain.com
ns2.101domain.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:relay.mailchannels.net include:_spf.psm.knowbe4.com ip4:12.50.154.178 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- MS=ms15392696
- SPFv=spf1 include:spf.protection.outlook.com include:relay.mailchannels.net include:_spf.psm.knowbe4.com ip4:12.50.154.178 -all
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