Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
firstdebit.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 19:48:47 UTC · ↺ Refresh
MX Hostnames
- firstdebit-de.mail.protection.outlook.com
MX Priorities
- firstdebit-de.mail.protection.outlook.com: 0
A / AAAA Records
- 91.210.225.44 ↩ s44.internetwerk.de
Mail Server IPs
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.internetwerk.de root.ns1.internetwerk.de 1757927460 10800 3600 604800 3600
Primary NS (mname)
ns1.internetwerk.de
Admin Email (rname)
root@ns1.internetwerk.de
Serial
1757927460
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns2.internetwerk.de
ns1.internetwerk.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com a:mail.firstdeb.de a:mail.firstdebit.net a:portal.firstdebit.de a:s44.internetwerk.de -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
2 records- SPFv=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com a:mail.firstdeb.de a:mail.firstdebit.net a:portal.firstdebit.de a:s44.internetwerk.de -all
- google-site-verification=G4Vrb-zKevqHKkte8a526Rn9sIVKonid4qcwzyHPos4
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