Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
building-envelope.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 13:13:58 UTC · ↺ Refresh
MX Hostnames
- buildingenvelope-net02b.mail.protection.outlook.com
MX Priorities
- buildingenvelope-net02b.mail.protection.outlook.com: 0
A / AAAA Records
- 72.167.39.205 ↩ 205.39.167.72.host.secureserver.net
Mail Server IPs
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.40.4 ↩ mail-cy5pr03cu00204.inbound.protection.outlook.com
- 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
- 2a01:111:f403:c92c::4 ↩ mail-dm6pr05cu00404.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 2a01:111:f403:c927::1 ↩ mail-bn8pr05cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
SOA Record
Raw SOA
ns37.domaincontrol.com dns.jomax.net 2026030301 28800 7200 604800 3600
Primary NS (mname)
ns37.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026030301
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns37.domaincontrol.com
ns38.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:192.169.216.156 include:spf.protection.outlook.com include:secureserver.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=none; fo=1;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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
5 records- SPFv=spf1 ip4:192.169.216.156 include:spf.protection.outlook.com include:secureserver.net -all
- sophos-domain-verification=5804745d384fababd985b71c35eeef2711abbb22ca150423ceba50f27b35e957
- v=verifydomain MS=2998161
- google-site-verification=NXP04K6LnWPzgMG7Jxro2lyMxhqbW6vSVlM0u0skg_g
- ue sophos-domain-verification=11895fdff5ae9b8c822204c151de3e86bbf0398a
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 · Customize →
See demo & docs
Deep verification
Full email verification for building-envelope.net
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits