zintro.com

Valid Email Server
Domain Lookup › zintro.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
zintro.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-06-30 16:18:05 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

  • aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 20
  • alt2.aspmx.l.google.com: 20
  • alt3.aspmx.l.google.com: 50
  • alt4.aspmx.l.google.com: 50

A / AAAA Records

  • 198.49.23.145
  • 198.185.159.145
  • 198.185.159.144
  • 198.49.23.144

Mail Server IPs

  • 172.253.62.27 ↩ bc-in-f27.1e100.net
  • 2607:f8b0:4004:c23::1b ↩ yuiadrs-in-f27.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1b (no PTR)
  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
  • 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
  • 172.253.157.27 ↩ yubrupd-in-f27.1e100.net
  • 2a00:1450:400c:c23::1a ↩ yubrupd-in-f26.1e100.net

SOA Record

Raw SOA ns-428.awsdns-53.com slewtan.zintro.net 1 7200 900 1209600 86400
Primary NS (mname)
ns-428.awsdns-53.com
Admin Email (rname)
slewtan@zintro.net
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-732.awsdns-27.net
ns-1028.awsdns-00.org
ns-1840.awsdns-38.co.uk
ns-428.awsdns-53.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.mailersend.net include:spf.mandrillapp.com include:_spf.google.com include:45821491.spf04.hubspotemail.net include:mailgun.org mx a ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

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

DKIM Selectors

✓ 2 found
google._domainkey
mail._domainkey
✓ Public key: 216 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

1 record
  • SPFv=spf1 include:_spf.mailersend.net include:spf.mandrillapp.com include:_spf.google.com include:45821491.spf04.hubspotemail.net include:mailgun.org mx a ~all
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