Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
r2systems.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 11:11:19 UTC · ↺ Refresh
MX Hostnames
- r2systems-mx.mail.eo.outlook.com
MX Priorities
- r2systems-mx.mail.eo.outlook.com: 0
A / AAAA Records
- 104.21.80.37 (no PTR)
- 172.67.173.174 (no PTR)
- 2606:4700:3031::6815:5025
- 2606:4700:3032::ac43:adae
Mail Server IPs
- 52.101.10.14 ↩ mail-bn6pr04cu00206.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.8.34 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 52.101.41.21 ↩ mail-sj2pr05cu00305.inbound.protection.outlook.com
- 2a01:111:f403:c901::1 ↩ mail-bl2pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
cheryl.ns.cloudflare.com dns.cloudflare.com 2399883484 10000 2400 604800 1800
Primary NS (mname)
cheryl.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399883484
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
cheryl.ns.cloudflare.com
west.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo 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=7BAF0E4C1B8BEA40600A6F03ECAAD28152817B07
- SPFv=spf1 include:spf.protection.outlook.com -all
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