Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sommerfeld-majka.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 15:03:18 UTC · ↺ Refresh
MX Hostnames
- sommerfeldmajka-de02e.mail.protection.outlook.com
MX Priorities
- sommerfeldmajka-de02e.mail.protection.outlook.com: 0
A / AAAA Records
- 185.175.196.51 (no PTR)
- 2a00:1c98:60:1071::5856:4165 (no PTR)
Mail Server IPs
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.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
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1111.ui-dns.biz hostmaster.1und1.com 2017060124 28800 7200 604800 600
Primary NS (mname)
ns1111.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060124
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1078.ui-dns.org
ns1057.ui-dns.com
ns1111.ui-dns.biz
ns1106.ui-dns.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
4 records- MS=ms21807970
- google-site-verification=JbTiLUX5qE0jZidU5_EFNU5v1g9yTMpyA1icn-sZ1ms
- SPFv=spf1 include:spf.protection.outlook.com -all
- 1f15372g9fjvplber4h1f3dglp
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 sommerfeld-majka.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits