Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
chrona.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 20:32:47 UTC · ↺ Refresh
MX Hostnames
- smtp1.flexcom.de
- mx3.flexcom.de
- smtp3.flexcom.de
- smtp2.flexcom.de
MX Priorities
- smtp1.flexcom.de: 50
- smtp2.flexcom.de: 50
- mx3.flexcom.de: 10
- smtp3.flexcom.de: 50
A / AAAA Records
- 148.251.253.36 ↩ s5.flexcom.de
Mail Server IPs
- 176.9.180.185 ↩ static.185.180.9.176.clients.your-server.de
- 2a01:4f8:13a:27ad::10 ↩ smtp1.flexcom.de
- 176.9.180.190 ↩ static.190.180.9.176.clients.your-server.de
- 2a01:4f8:13a:27ad::11 ↩ smtp2.flexcom.de
- 176.9.180.178 ↩ mx3.flexcom.de
- 176.9.180.191 ↩ static.191.180.9.176.clients.your-server.de
- 2a01:4f8:13a:27ad::12 ↩ smtp3.flexcom.de
SOA Record
Raw SOA
ns1a.dodns.net hostmaster.chrona.de 2024020601 7200 900 3600000 86400
Primary NS (mname)
ns1a.dodns.net
Admin Email (rname)
hostmaster@chrona.de
Serial
2024020601
Refresh
7200s
Retry
900s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns1a.dodns.net
ns2a.dodns.net
SPF Record
✓ Strict (-all)
v=spf1 a mx -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 a mx -all
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