rsrna.com

Valid Email Server
Domain Lookup › rsrna.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
rsrna.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-06-03 09:00:42 UTC · ↺ Refresh

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MX Hostnames

  • de-smtp-inbound-1.mimecast.com
  • de-smtp-inbound-2.mimecast.com

MX Priorities

  • de-smtp-inbound-2.mimecast.com: 10
  • de-smtp-inbound-1.mimecast.com: 10

A / AAAA Records

  • 40.124.115.157 (no PTR)

Mail Server IPs

  • 194.104.110.22 ↩ de-smtp-inbound-1.mimecast.com
  • 194.104.108.22 ↩ de-smtp-inbound-2.mimecast.com

SOA Record

Raw SOA ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-03.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s

Nameservers (NS)

ns2-03.azure-dns.net
ns3-03.azure-dns.org
ns4-03.azure-dns.info
ns1-03.azure-dns.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:38.114.110.130 include:de._netblocks.mimecast.com include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

10 records
  • 0ed1fe018ace13e30bc5414a7b9846f06df963a252
  • knowbe4-site-verification=c2a01c05ac956f845c5150be0eccb27b
  • TAAI4n6Ige8xi/EdkVZ7o0+wZYRyl03Ltb0ILr5aPDpr/PZzY0JBWdPJbz9pRxLRXleLDWZsnSH7y9mf4SxDuA==
  • f46f6+yHcNmCOWW/MMAz51/NbfNwz96O0SqtqZq02W0w27TMQ4VGamZCVjBjb6pDwWaz47iFthLPOtYBjYhEzw==
  • MS=ms72867759
  • zh7z2wl2zsbnb9nbdzfgb2dvqp1wblpz
  • wfnw8sk2g0tz2yzxmj42bb1rmrktzxy0
  • SPFv=spf1 ip4:38.114.110.130 include:de._netblocks.mimecast.com include:spf.protection.outlook.com ~all
  • mt-54607491
  • ypt1shf86692rhvq3cv5z0jdtdykbw4c
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