Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
nik-mueller.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 10:39:06 UTC · ↺ Refresh
MX Hostnames
- nikmueller-de0i.mail.protection.outlook.com
MX Priorities
- nikmueller-de0i.mail.protection.outlook.com: 0
A / AAAA Records
- 217.160.0.173 ↩ 217-160-0-173.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::2ac ↩ 2001-08d8-100f-f000-0000-0000-0000-02ac.elastic-ssl.ui-r.com
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 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
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns3.kundenserver.de hostmaster.kundenserver.de 2017042580 28800 7200 604800 300
Primary NS (mname)
ns3.kundenserver.de
Admin Email (rname)
hostmaster@kundenserver.de
Serial
2017042580
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns4.kundenserver.de
ns3.kundenserver.de
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:217.160.0.173 include:spf.protection.outlook.com include:spf.nik-mueller.de ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected];ri=86400;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
2 records- SPFv=spf1 ip4:217.160.0.173 include:spf.protection.outlook.com include:spf.nik-mueller.de ~all
- MS=ms34813070
Full email verification for nik-mueller.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits