Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sigma-zentrifugen.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 21:09:00 UTC · ↺ Refresh
MX Hostnames
- sigmazentrifugen-de01c.mail.protection.outlook.com
MX Priorities
- sigmazentrifugen-de01c.mail.protection.outlook.com: 10
A / AAAA Records
- 130.255.79.198 ↩ attila.altoserver.de
Mail Server IPs
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::f ↩ mail-db7pr03cu00507.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.inbound.protection.outlook.com
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2026012708 28800 7200 1209600 86400
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2026012708
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
third-dns.netcup.net
root-dns.netcup.net
second-dns.netcup.net
SPF Record
✓ Strict (-all)
v=spf1 a:attila.altoserver.de include:spf.eu.signature365.net include:spf.protection.outlook.com include:spf.nl2go.com ip4:194.25.214.158/32 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; ruf=mailto:[email protected]; rua=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
3 records- facebook-domain-verification=s02ti6ym17csp6qpun9vpq0ajwrwvq
- MS=ms36182028
- SPFv=spf1 a:attila.altoserver.de include:spf.eu.signature365.net include:spf.protection.outlook.com include:spf.nl2go.com ip4:194.25.214.158/32 -all
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