Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ertl-gmbh.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 18:56:05 UTC · ↺ Refresh
MX Hostnames
- ertlgmbh-de01b.mail.protection.outlook.com
MX Priorities
- ertlgmbh-de01b.mail.protection.outlook.com: 0
A / AAAA Records
- 78.46.12.194 ↩ dedi5102.your-server.de
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:ca27:: ↩ mail-beup281cu00100.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
SOA Record
Raw SOA
fay.ns.cloudflare.com dns.cloudflare.com 2395687751 10000 2400 604800 1800
Primary NS (mname)
fay.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2395687751
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
fay.ns.cloudflare.com
jeff.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 mx a a:gate.ertl-gmbh.de ip4:145.253.184.234 include:spf.nl2go.com include:spf.protection.outlook.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- DKIMv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCalZk2ErBK5e4UtR3SaD3z1QpGwfsaRnh719bh55steGcIehZoaxn0ojZcgtQTICXmipklatBGaG0O5G/xX4ex8A5JfDUcaEESo/bg/TBnCAP7CCRbqVaMCtsRGeWzvCpetg+VUg0U14jy3EgZ/GV0QWcOy7cfRD+Eta8IrljH8QIDAQAB;
- SPFv=spf1 mx a a:gate.ertl-gmbh.de ip4:145.253.184.234 include:spf.nl2go.com include:spf.protection.outlook.com -all
- MS=ms66760440
- google-site-verification=MKuyUa7U74UQq9wHF3KQCTywXimg6Dt2FT43IbgVpuQ
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