courier.com

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

Domain Overview

DNS: ⚡ live Checker: ⚡ live
courier.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-22 21:07:31 UTC · ↺ Refresh

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MX Hostnames

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

MX Priorities

No priority data.

A / AAAA Records

  • 76.76.21.21

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns-441.awsdns-55.com
ns-548.awsdns-04.net
ns-1038.awsdns-01.org
ns-1982.awsdns-55.co.uk

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.mailersend.net include:_spf.google.com include:sendgrid.net include:spf.mtasv.net ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; pct=1; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 1% of failing messages only

DKIM Selectors

✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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

10 records
  • apple-domain-verification=8qNLcffGhRWhFO94
  • google-site-verification=7b2K2owln05NW1dkXtHOmAtrASSfZAJ8kI0LQUNu5ks
  • google-site-verification=Y-j2Wi_5JQHIOABYrU2lPcYNll-XuymSv7_-EiSKx2Y
  • google-site-verification=ZF0_st2b0Cyhg_bKiTjGp6iYCAZI5TzJmkRuBJP2R6g
  • google-site-verification=g4CG6hv0onhw1QiwPLaY3h7oBnfWENUNiWdUm28pqF0
  • https://issues.sonatype.org/browse/OSSRH-64486
  • segment-site-verification=ieTuLEPaJXR6Id3hvo1izTU5TKIzu96d
  • stripe-verification=a8a5634a93cb68faf80478238e81cbf138d9c99eb714c87399d457ae7a5a8b4d
  • SPFv=spf1 include:_spf.mailersend.net include:_spf.google.com include:sendgrid.net include:spf.mtasv.net ~all
  • ZOOM_verify_2DHilZPBSnCdDGbYf8Zqfg
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