Domain Overview
DNS: ✓ 3d ago
Checker: ✓ 3d ago
heffroncompany.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-19 09:05:19 UTC · ↺ Refresh
MX Hostnames
- heffroncompany-com.mail.protection.outlook.com
MX Priorities
- heffroncompany-com.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.180.192 (no PTR)
- 104.21.31.235 (no PTR)
- 2606:4700:3031::6815:1feb
- 2606:4700:3033::ac43:b4c0
Mail Server IPs
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 52.101.41.3 ↩ mail-sj2pr05cu00103.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
teagan.ns.cloudflare.com dns.cloudflare.com 2403395394 10000 2400 604800 1800
Primary NS (mname)
teagan.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2403395394
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
teagan.ns.cloudflare.com
trey.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com a:dispatch-us.ppe-hosted.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
4 records- mscid=3oit0aQRyOIIbsQswUYjSwi6yxFfRU+8YPZ3bOfw0IxqI9EZVEvelF8BnIXGTnKBFTU4HAJRuG64Ng5ZTtXyRg==
- ppe-cc011ff03e48ac8b1ae1a02a65c99891d68728a2
- SPFv=spf1 include:spf.protection.outlook.com a:dispatch-us.ppe-hosted.com -all
- MS=ms26163160
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 heffroncompany.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits