guotech.io

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

Domain Overview

DNS: ⚡ live Checker: ⚡ live
guotech.io
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 12:14:45 UTC · ↺ Refresh

MX Hostnames

  • guotech-io.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 104.21.9.26
  • 172.67.141.45
  • 2606:4700:3031::6815:91a
  • 2606:4700:3032::ac43:8d2d

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

cody.ns.cloudflare.com
dora.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:25526359.spf10.hubspotemail.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 3 found
mail._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail

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

All TXT Records

10 records
  • brevo-code:70f70625d8b13387eef84e6a52a14390
  • google-site-verification=BbzpIXzcnrWK6Cko0gTtRwHjSScPhZTZgPq26u5CueE
  • google-site-verification=l_Bo99gs9Ww5_8Ruc1JFfN6Jg4LBEtMY3yU59CazcxU
  • google-site-verification=nI_Lj4WpeHGGpajhbHX-VsoVALDsdUtdEfytgVhucLA
  • google-site-verification=ycyiVfu51BsBWivE-mwu-wb_y7kAyNmK8l1o8ST1Jso
  • stripe-verification=20ef96d14a641c7e02b1cf500ac9a681e6ba7495dba183015d2ee28213c5cab9
  • SPFv=spf1 include:spf.protection.outlook.com include:25526359.spf10.hubspotemail.net ~all
  • MS=ms52551475
  • _acme-challenge.checkout=yYg3-D1AIAKlhzQTd7K_E1zNg6HpPMB1GMjtNFdcNL8
  • brevo-code:6f2a3e24fbf0485c7f8ee376f92beaf4
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