Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
douglas.co.us
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 05:33:55 UTC · ↺ Refresh
MX Hostnames
- douglas-co-us.mail.protection.outlook.com
MX Priorities
- douglas-co-us.mail.protection.outlook.com: 0
A / AAAA Records
- 67.135.162.182 ↩ hosted.douglas.co.us
Mail Server IPs
- 52.101.8.50 ↩ mail-dm6pr09cu00202.inbound.protection.outlook.com
- 52.101.8.52 ↩ mail-ds0pr09cu00104.inbound.protection.outlook.com
- 52.101.9.19 ↩ mail-blapr09cu00103.inbound.protection.outlook.com
- 52.101.11.12 ↩ mail-sa9pr09cu00104.inbound.protection.outlook.com
- 2a01:111:f403:f904:: ↩ mail-dm6pr09cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90e::1 ↩ mail-sa9pr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f900::1 ↩ mail-blapr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f904::1 ↩ mail-ds0pr09cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
prns1.douglas.co.us dns.cloudflare.com 2398836373 10000 2400 604800 1800
Primary NS (mname)
prns1.douglas.co.us
Admin Email (rname)
dns@cloudflare.com
Serial
2398836373
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
prns1.douglas.co.us
prns2.douglas.co.us
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:_spf.psm.knowbe4.com ip4:67.135.162.161 ip4:67.135.162.162 ip4:35.80.141.6 ip4:44.229.121.55 ip4:148.59.100.16/28 ip4:198.21.6.113 ip4:168.245.40.179 include:_spf.saffire.com include:spf.mandrillapp.com include:amazonses.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
11 records- docusign=080d5311-5b5b-487a-b31f-3d18cd62addb
- docusign=74aa319b-e809-4292-aa42-6081df19d9e2
- ms-domain-verification=3dd0ea78-7a1c-4397-885c-9e7fa3b4ab07
- ms-domain-verification=6d20d162-1ed1-4c56-b4d3-9c3aa5bc0932
- ms-domain-verification=803abc19-ebf0-4d96-bfe9-c12b3d7be6ea
- noi1d56e8evv2eoupjdb4mskev
- uubo08d0e98m0u0e8hpnmfqmon
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.salesforce.com include:_spf.psm.knowbe4.com ip4:67.135.162.161 ip4:67.135.162.162 ip4:35.80.141.6 ip4:44.229.121.55 ip4:148.59.100.16/28 ip4:198.21.6.113 ip4:168.245.40.179 include:_spf.saffire.com include:spf.mandrillapp.com include:amazonses.com -all
- TAuuH6o3Mx7duhtdyhqXSblS8OjKaqpGva9wL5TaoYyigBA6FkkpzuSJ0P9+V9Q+eJEHaYaS6KRlaeoPfIhtyA==
- apple-domain-verification=sSk972jpqJKHFWNK
- cisco-ci-domain-verification=71931e5c2e3b02ab93a15bfac2583488a05e900688c18d5153af7df89a688b47
Full email verification for douglas.co.us
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