Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
grubb-ellis.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 06:32:05 UTC · ↺ Refresh
MX Hostnames
- grubbellis-com01c.mail.protection.outlook.com
MX Priorities
- grubbellis-com01c.mail.protection.outlook.com: 10
A / AAAA Records
- 66.161.12.21 (no PTR)
Mail Server IPs
- 52.101.10.10 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90a:: ↩ mail-bn6pr02cu00300.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
blue.foundationdns.com webdomainadmin.cantor.com 713 10800 3600 2419200 900
Primary NS (mname)
blue.foundationdns.com
Admin Email (rname)
webdomainadmin@cantor.com
Serial
713
Refresh
10800s
Retry
3600s
Expire
2419200s
Minimum TTL
900s
Nameservers (NS)
blue.foundationdns.org
blue.foundationdns.com
blue.foundationdns.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
5 records- ZOOM_verify_5UiCfoeTDuJYqDxtM4kFIE
- box-domain-verification=f398f9e611e2ee1666799c441e616c30a94d3535e2f10d0a9806d583698c03ba
- have-i-been-pwned-verification=f6b7e2b5919776876c293b7e0234fa08
- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms14150438
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for grubb-ellis.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits