Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
treubau.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 07:26:37 UTC · ↺ Refresh
MX Hostnames
- treubau-de.mail.protection.outlook.com
MX Priorities
- treubau-de.mail.protection.outlook.com: 0
A / AAAA Records
- 89.110.144.185 ↩ mail.v171.ncsrv.de
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.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
- 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns.ui-global-dns.de hostmaster.1und1.com 2017060126 28800 7200 604800 600
Primary NS (mname)
ns.ui-global-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060126
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns.ui-global-dns.biz
ns.ui-global-dns.com
ns.ui-global-dns.org
ns.ui-global-dns.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com a:mail02.igrn.de -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;rua=mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected],mailto:[email protected];ri=3600;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
5 records- brevo-code:01b5f98a742b4845f26425730f1f6a64
- BJd83A8Ja6PseNn4B5IWxD7KgVYgBDIQep3RU4FpNvQdPK0nUHXGsKokVs//rvRMH3KpZC6xk9SfLGibzYdWTw==
- MS=ADDAA0D3E59853DD2ED966E8E9D33C3E3B35D0DF
- apple-domain-verification=h5Kh6Bh26swCmJhF
- SPFv=spf1 include:spf.protection.outlook.com a:mail02.igrn.de -all
Full email verification for treubau.de
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