letterone.com

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

Domain Overview

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

Checked via [email protected] · 2026-05-21 10:15:15 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

No priority data.

A / AAAA Records

  • 144.126.194.176

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns23.digicertdns.net
ns24.digicertdns.net
ns20.digicertdns.com
ns22.digicertdns.com
ns21.digicertdns.com
ns25.digicertdns.net

SPF Record

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

DMARC Record

✗ Missing

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

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

15 records
  • jamf-site-verification=keIHZSnOAtfBkODWj80iuA
  • 2i32029llgai7kmo1hc8g1u1j2
  • KpHJL9wHakqgIfRKbDi63C46fSgXXwNUl68yWLiNzCoRIHrgWWuA3JBQxBYebQia1mPPEwgzpbyDYUgJtugqzQ==
  • adobe-idp-site-verification=e105661d330b985a3ffa349e2b511bde5dc60f53ce3bff1bd06979ef0305684b
  • SPFv=spf1 include:_netblocks.mimecast.com include:spf.protection.outlook.com ~all
  • notion-domain-verification=lxy4J16QUIW8DiSJrg1zTGe8Gzq8Qgow0dPyD8ASG5u
  • docusign=edf0843b-9fa4-4aab-b6d9-d25b2db66619
  • MS=ms46438399
  • ZOOM_verify_ME4JqDpio882pKhhuiY5Jg
  • MS=5550C8C070A7EB59C82E1F01283D1753515739A2
  • 35N3H029PR92UC1UN40DQ5K8T3
  • apple-domain-verification=X1DlURRiaTkuKvkq
  • HznLSWsu4ZFqsn90wbRImuLRRvSZZhSqJ9181bS2nRNFWsX9IWOV7KcDal+dkWAH4OEcxmK3AUGCM7Nu1A19Uw==
  • cisco-ci-domain-verification=1bb41800f68dba804191f2022468203ecfc41721e4b5effd926e4108f47f70d7
  • 231fd671-afb7-4c3a-b8d8-c522e75c625b
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