relonline.com

Valid Email Server
Domain Lookup › relonline.com

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
relonline.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-19 19:32:12 UTC · ↺ Refresh

MX Hostnames

  • relonline-com.mail.protection.outlook.com

MX Priorities

  • relonline-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 16.15.244.184 (no PTR)
  • 52.217.88.251 ↩ s3-website-us-east-1.amazonaws.com
  • 16.15.252.70
  • 52.217.140.125
  • 16.15.244.231
  • 16.15.191.72
  • 16.15.186.97
  • 54.231.139.53

Mail Server IPs

  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
  • 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
  • 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f912:: ↩ mail-cy5pr03cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com

SOA Record

Raw SOA ns-770.awsdns-32.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-770.awsdns-32.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1734.awsdns-24.co.uk
ns-399.awsdns-49.com
ns-770.awsdns-32.net
ns-1120.awsdns-12.org

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ 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=ms11225639
  • SPFv=spf1 include:spf.protection.outlook.com include:spf.ess.barracudanetworks.com -all
Full email verification for relonline.com

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits