cts.co

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cts.co
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 21:22:33 UTC · ↺ Refresh

MX Hostnames

  • alt2.aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • aspmx.l.google.com
  • alt3.aspmx.l.google.com

MX Priorities

  • alt3.aspmx.l.google.com: 10
  • alt4.aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1

A / AAAA Records

  • 104.26.8.190
  • 104.26.9.190
  • 172.67.75.111
  • 2606:4700:20::681a:9be
  • 2606:4700:20::ac43:4b6f
  • 2606:4700:20::681a:8be

Mail Server IPs

  • 192.178.223.27 ↩ yulhrs-in-f27.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 173.194.76.27 ↩ ws-in-f27.1e100.net
  • 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
  • 192.178.155.27 ↩ yuiadrs-in-f27.1e100.net
  • 2607:f8b0:4004:c1f::1b ↩ pd-in-f27.1e100.net

SOA Record

Raw SOA bruce.ns.cloudflare.com dns.cloudflare.com 2397377619 10000 2400 604800 1800
Primary NS (mname)
bruce.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397377619
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

sofia.ns.cloudflare.com
bruce.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:_spf.salesforce.com include:7705474.spf04.hubspotemail.net include:_spf.arlo.co ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; rf=afrf; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

DKIM Selectors

✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 237 chars (valid)
✓ DKIM properly configured for selector: google

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

All TXT Records

8 records
  • SPFv=spf1 include:_spf.google.com include:_spf.salesforce.com include:7705474.spf04.hubspotemail.net include:_spf.arlo.co ~all
  • MS=ms92537764
  • atlassian-domain-verification=RVTx8y4ddta2NeogNYikf72FxBYRYQl3DLNUt0oMdgkwJuH0QMYaC2G8SfYlx6w9
  • google-site-verification=ScVZY4Jgd198Sm6kZYyLSA6Oc7E5q24AUaaCaZMwTx4
  • google-site-verification=TGcG5F020fdhTMYHA0FUqN4ZIfOO4w9Oq8DQzRlk1Do
  • google-site-verification=uFonckXUHHre-Ciih-c632-dihF-BQFFL0QJp9kFQbA
  • lucid-verification=<pzbxWWchz8LgHyNXPJfs>
  • sending_domain1065622=2ff016aa0220dbda4dfbad8c1c1507982ce90915ddeb4d0006375a5bc18c466d
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