Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zweitmarkt.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 12:26:06 UTC · ↺ Refresh
MX Hostnames
- zweitmarkt-de.mail.protection.outlook.com
MX Priorities
- zweitmarkt-de.mail.protection.outlook.com: 0
A / AAAA Records
- 51.91.60.135 (no PTR)
Mail Server IPs
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.1 ↩ mail-fr4p281cu03101.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
ns0.lon.auth.colt.net it-gruppe.zweitmarkt.de 2024112600 39940 14400 604800 3600
Primary NS (mname)
ns0.lon.auth.colt.net
Admin Email (rname)
it-gruppe@zweitmarkt.de
Serial
2024112600
Refresh
39940s
Retry
14400s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns1.fra.auth.colt.net
ns0.lon.auth.colt.net
SPF Record
✓ Strict (-all)
v=spf1 mx a:mailout07.comconnect.com ip4:195.230.114.253/32 include:spf.protection.outlook.com include:spf.nl2go.com ip4:91.198.35.245 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100;rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
1 record- SPFv=spf1 mx a:mailout07.comconnect.com ip4:195.230.114.253/32 include:spf.protection.outlook.com include:spf.nl2go.com ip4:91.198.35.245 -all
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