Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
m-b.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 03:09:18 UTC · ↺ Refresh
MX Hostnames
- mb-de0c.mail.protection.outlook.com
MX Priorities
- mb-de0c.mail.protection.outlook.com: 0
A / AAAA Records
- 35.156.244.112 ↩ m-b.de
Mail Server IPs
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
SOA Record
Raw SOA
m.de.ha-dns.net do-not-reply.m-b.de 2024121200 39940 14400 604800 14400
Primary NS (mname)
m.de.ha-dns.net
Admin Email (rname)
do-not-reply@m-b.de
Serial
2024121200
Refresh
39940s
Retry
14400s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
ka2.de.ha-dns.net
m.de.ha-dns.net
f2.de.ha-dns.net
lxa.us.ha-dns.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:amazonses.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
3 records- amazonses:nGGrFITqfYYvYEthSyHCD3JugkhEtUOv7uYZOFCHmJ4=
- SPFv=spf1 include:spf.protection.outlook.com include:amazonses.com include:spf-de.emailsignatures365.com -all
- MS=ms67769629
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 m-b.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits