Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tbtts.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 17:21:38 UTC · ↺ Refresh
MX Hostnames
- tbtts-de.mail.protection.outlook.com
MX Priorities
- tbtts-de.mail.protection.outlook.com: 0
A / AAAA Records
- 185.85.17.227 ↩ vps-339801-6832.hosted.at.hostnet.nl
Mail Server IPs
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.sectigoweb.com admin.sectigo.com 1667916638 86400 10800 604800 300
Primary NS (mname)
ns1.sectigoweb.com
Admin Email (rname)
admin@sectigo.com
Serial
1667916638
Refresh
86400s
Retry
10800s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns4.sectigoweb.com
ns1.sectigoweb.com
ns2.sectigoweb.com
ns3.sectigoweb.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.hostnet.nl include:143126937.spf01.hubspotemail.net ip4:185.85.17.227 -all
📊 DNS lookups: 3/10
✓ 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: 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- MS=ms72429196
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.hostnet.nl include:143126937.spf01.hubspotemail.net ip4:185.85.17.227 -all
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