masterlibrary.com

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

Domain Overview

DNS: ⚡ live Checker: ⚡ live
masterlibrary.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 00:37:29 UTC · ↺ Refresh

MX Hostnames

  • masterlibrary-com.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 199.16.172.166
  • 199.16.173.9

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns0.dnsmadeeasy.com
ns3.dnsmadeeasy.com
ns4.dnsmadeeasy.com
ns1.dnsmadeeasy.com
ns2.dnsmadeeasy.com

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:20.96.235.248/29 ip4:20.221.121.48/29 ip4:20.125.75.224/29 ip4:20.44.84.177/32 ip4:52.232.227.9/32 include:_spf.google.com include:spf.mandrillapp.com include:mail.zendesk.com include:sendgrid.net include:spf.protection.outlook.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

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

DKIM Selectors

✓ 2 found
google._domainkey
dkim._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

6 records
  • SPFv=spf1 ip4:20.96.235.248/29 ip4:20.221.121.48/29 ip4:20.125.75.224/29 ip4:20.44.84.177/32 ip4:52.232.227.9/32 include:_spf.google.com include:spf.mandrillapp.com include:mail.zendesk.com include:sendgrid.net include:spf.protection.outlook.com ~all
  • <21.11.2024>
  • asv=f309960ab7b20d277b3b4af068361bbb
  • google-site-verification=Hf0AkjgQcxS6sv_i4r7vkZ0I68abASVRiacI2FiYmK0
  • MS=ms46307997
  • google-site-verification=jMIor4E5imr5rP8EBOi-w_DVyC4VAOsA8ARwjwrqutU
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