corp.doctor.com

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

Domain Overview

DNS: ⚡ live Checker: ⚡ live
corp.doctor.com
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 04:14:16 UTC · ↺ Refresh

MX Hostnames

  • alt2.aspmx.l.google.com
  • ms17722294.msv1.invalid
  • alt1.aspmx.l.google.com
  • aspmx.l.google.com
  • aspmx2.googlemail.com
  • aspmx3.googlemail.com

MX Priorities

  • aspmx3.googlemail.com: 10
  • ms17722294.msv1.invalid: 32767
  • alt1.aspmx.l.google.com: 5
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1
  • aspmx2.googlemail.com: 10

A / AAAA Records

  • 204.74.99.100 ↩ crs.ultradns.net

Mail Server IPs

  • 172.253.116.27 ↩ dj-in-f27.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 142.251.167.27 ↩ ww-in-f27.1e100.net
  • 2607:f8b0:4004:c08::1a ↩ bi-in-f26.1e100.net

SOA Record

No SOA record found.

Nameservers (NS)

No nameservers found.

SPF Record

✓ Strict (-all)
v=spf1 a include:_spf.google.com ip4:50.205.244.124 ip4:13.111.0.0/16 ip4:198.2.0.0/16 ip4:205.201.0.0/16 ip4:198.245.81.0/24 ip4:136.147.0.0/16 ip4:199.122.123.0/16 include:_spf.salesforce.com include:3053445.spf01.hubspotemail.net include:spf.mandrillapp.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._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

4 records
  • MS=ms30528610
  • docusign=d42d888b-ab57-442f-a85b-bf3ba85437db
  • SPFv=spf1 a include:_spf.google.com ip4:50.205.244.124 ip4:13.111.0.0/16 ip4:198.2.0.0/16 ip4:205.201.0.0/16 ip4:198.245.81.0/24 ip4:136.147.0.0/16 ip4:199.122.123.0/16 include:_spf.salesforce.com include:3053445.spf01.hubspotemail.net include:spf.mandrillapp.com -all
  • MS=ms17722294
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