Domain Overview
DNS: ✓ 2d ago
Checker: ✓ 2d ago
lettowplumbing.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-19 13:38:15 UTC · ↺ Refresh
MX Hostnames
- lettowplumbing-com.mail.protection.outlook.com
MX Priorities
- lettowplumbing-com.mail.protection.outlook.com: 0
A / AAAA Records
- 216.152.143.240 (no PTR)
Mail Server IPs
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 2a01:111:f403:c91d::a ↩ mail-co1pr21cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.g10.cfdns.net tsidomains.townsquaredigital.com 2026043003 3600 1200 604800 3600
Primary NS (mname)
ns1.g10.cfdns.net
Admin Email (rname)
tsidomains@townsquaredigital.com
Serial
2026043003
Refresh
3600s
Retry
1200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.g10.cfdns.biz
ns4.g10.cfdns.co.uk
ns1.g10.cfdns.net
ns3.g10.cfdns.info
SPF Record
✓ Strict (-all)
v=spf1 include:secureserver.net -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:secureserver.net -all
- MS=ms39516558
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 lettowplumbing.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits