Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fsf.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-31 20:24:58 UTC · ↺ Refresh
MX Hostnames
- fsf-de.mail.protection.outlook.com
MX Priorities
- fsf-de.mail.protection.outlook.com: 0
A / AAAA Records
- 116.203.247.250 ↩ dedivirt1886.your-server.de
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.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
- 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.herbst.de dnsmaster.herbst.de 2025121700 14400 3600 604800 900
Primary NS (mname)
ns1.herbst.de
Admin Email (rname)
dnsmaster@herbst.de
Serial
2025121700
Refresh
14400s
Retry
3600s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
ns1.herbst.de
ns3.herbst.de
ns2.herbst.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 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- google-site-verification=kxN4atpgvqQlIc4HHQjyieq_-bqYN7_B3DHRV51HF2U
- SPFv=spf1 include:spf.protection.outlook.com -all
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