Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rrs-inc.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 09:26:36 UTC · ↺ Refresh
MX Hostnames
- rrsinc-com0i.mail.protection.outlook.com
MX Priorities
- rrsinc-com0i.mail.protection.outlook.com: 0
A / AAAA Records
- 131.226.5.13 ↩ cpanel2-us-5-13.thcservers.com
Mail Server IPs
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c902::5 ↩ mail-sj2pr05cu00505.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f913:: ↩ mail-cy1pr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.thcservers.com servers.thcservers.com 2026032703 3600 1800 1209600 86400
Primary NS (mname)
ns1.thcservers.com
Admin Email (rname)
servers@thcservers.com
Serial
2026032703
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns4.thcservers.com
ns1.thcservers.com
ns2.thcservers.com
ns3.thcservers.com
SPF Record
✓ Soft Fail (~all)
v=spf1 +a +mx +ip4:131.226.5.3 include:cpanel2-us.thcservers.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +a +mx +ip4:131.226.5.3 include:cpanel2-us.thcservers.com ~all
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