Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
patentverein.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 18:53:17 UTC · ↺ Refresh
MX Hostnames
- patentverein-de.mail.protection.outlook.com
MX Priorities
- patentverein-de.mail.protection.outlook.com: 10
A / AAAA Records
- 82.165.166.155 (no PTR)
Mail Server IPs
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
nsa8.schlundtech.de wolfgang\.postler.ichaus.de 2025120114 43200 7200 1209600 86400
Primary NS (mname)
nsa8.schlundtech.de
Admin Email (rname)
wolfgang\@postler.ichaus.de
Serial
2025120114
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
nsa8.schlundtech.de
nsd8.schlundtech.de
nsb8.schlundtech.de
nsc8.schlundtech.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:82.165.166.155 include:_spf.retarus.com include:spf.protection.outlook.com include:_spf-eu.ionos.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=reject;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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- MS=ms71596632
- SPFv=spf1 ip4:82.165.166.155 include:_spf.retarus.com include:spf.protection.outlook.com include:_spf-eu.ionos.com -all
- ms-domain-verification=28bbf1cb-b990-44f0-9e9f-ce1692424918
- 3554edb7071756f2c36a68dc272a0715e80488c3bd289c81f1047cea3d03b38
- brevo-code:0f157da116c0ed00c1ef1bd51ad04999
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 patentverein.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits