Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ostertagdetewe.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 09:52:56 UTC · ↺ Refresh
MX Hostnames
- ostertagdetewe-de.mail.protection.outlook.com
MX Priorities
- ostertagdetewe-de.mail.protection.outlook.com: 10
A / AAAA Records
- 212.211.213.243 (no PTR)
Mail Server IPs
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
SOA Record
Raw SOA
shades03.rzone.de hostmaster.strato-rz.de 2020061343 86400 7200 604800 300
Primary NS (mname)
shades03.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020061343
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
docks01.rzone.de
shades03.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:212.211.213.242 ip4:216.191.234.72 ip4:216.191.234.73 a:b.spf.service-now.com a:c.spf.service-now.com a:d.spf.service-now.com include:spf.protection.outlook.com include:spf.crsend.com a:mo.cobai.com include:my349048.mail.sapbydesign.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
6 records- ZOOM_verify_gtnVrdI8kZEX3RrPSQvaCp
- apple-domain-verification=F7MIiL3AICMglbo3
- amazonses:PaxVxCINnUuS+Ha34jCiMdp63ApeFHhI46c9+2bT+wA=
- SPFv=spf1 ip4:212.211.213.242 ip4:216.191.234.72 ip4:216.191.234.73 a:b.spf.service-now.com a:c.spf.service-now.com a:d.spf.service-now.com include:spf.protection.outlook.com include:spf.crsend.com a:mo.cobai.com include:my349048.mail.sapbydesign.com -all
- MS=ms60778768
- 7BiEEey1ggwx+kOM6YfjzrDBbJT7is56eR1LlslqfUlEzLbab1nYsymn2KYqkEcgFuU5m/7arScdN0hUpOJN2w==
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 ostertagdetewe.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits