Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
3s.email
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 11:01:17 UTC · ↺ Refresh
MX Hostnames
- 3s-email.mail.protection.outlook.com
MX Priorities
- 3s-email.mail.protection.outlook.com: 0
A / AAAA Records
- 89.31.143.90 (no PTR)
Mail Server IPs
- 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
- 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
- 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
- 52.101.170.2 ↩ mail-fr6p281cu00202.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
ns.udag.de hostmaster.united-domains.de 2024012311 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024012311
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns.udag.org
ns.udag.net
ns.udag.de
SPF Record
✗ Invalid
v=spf1 a mx a:cdxmoutxfwd01.datev.de a:cdxmoutxfwd02.datev.de a:mail.nitsche-asp.de include:spf.protection.outlook.com include:spf.mxg.cloud include:spf-westeu.emailsignatures365.com include:spf-de.emailsignatures365.com include:20085209.spf03.hubspotemail.net include:spf.mailjet.com -all
📊 DNS lookups: 11/10
— over limit!
⚠ Too many DNS lookups (11/10) — SPF will fail validation. Reduce include: statements.
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=ms61453565
- SPFv=spf1 a mx a:cdxmoutxfwd01.datev.de a:cdxmoutxfwd02.datev.de a:mail.nitsche-asp.de include:spf.protection.outlook.com include:spf.mxg.cloud include:spf-westeu.emailsignatures365.com include:spf-de.emailsignatures365.com include:20085209.spf03.hubspotemail.net include:spf.mailjet.com -all
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