Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
btb-berlin.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 18:56:50 UTC · ↺ Refresh
MX Hostnames
- btbberlin-de0i.mail.protection.outlook.com
MX Priorities
- btbberlin-de0i.mail.protection.outlook.com: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.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
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns0009.secondary.cloudflare.com hostmaster.adacor.net 2026031100 10800 3600 604800 3600
Primary NS (mname)
ns0009.secondary.cloudflare.com
Admin Email (rname)
hostmaster@adacor.net
Serial
2026031100
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns0166.secondary.cloudflare.com
ns0009.secondary.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:217.5.158.72/29 ip4:62.96.148.24/29 ip4:62.96.56.64/26 ip4:92.205.64.125 ip4:153.100.8.31 ip4:153.100.8.32 include:spf.protection.outlook.com include:spf.connectoor.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=none; fo=1; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
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
10 records- _z3jx9wc801ad5rz8we6zi4hjsc8pxzp
- apple-domain-verification=4RQxXPUvrNjLNxPk
- miro-verification=1b3c1d5a1befb77d969b2731581319ee39d74404
- SPFv=spf1 mx ip4:217.5.158.72/29 ip4:62.96.148.24/29 ip4:62.96.56.64/26 ip4:92.205.64.125 ip4:153.100.8.31 ip4:153.100.8.32 include:spf.protection.outlook.com include:spf.connectoor.com -all
- 59bc35a29619f9bcd1ce61ebc7f916cd
- D-TRUST=AG3OF775L234ZRIXLVX4AIV
- MS=ms84426556
- MS=ms95582152
- _5smkdi5qzppnzvo6pkcn4p9wlhpvd3c
- _globalsign-domain-verification=N5Q2hyURGEp4ZIyKSMOwvfao13rRYV0le5IZXV0bs9
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