Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zdf-service.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 13:18:13 UTC · ↺ Refresh
MX Hostnames
- mail.zdf.de
MX Priorities
- mail.zdf.de: 10
A / AAAA Records
- 77.75.255.106 ↩ zdf-service.sws-service.de
Mail Server IPs
- 194.45.94.190 ↩ mail.zdf.de
SOA Record
Raw SOA
nmaiz-iblox01.zdf.de netzwerk.zdf.de 72 900 300 2592000 180
Primary NS (mname)
nmaiz-iblox01.zdf.de
Admin Email (rname)
netzwerk@zdf.de
Serial
72
Refresh
900s
Retry
300s
Expire
2592000s
Minimum TTL
180s
Nameservers (NS)
ns01.zdf.de
ns02.zdf.de
SPF Record
✓ Strict (-all)
v=spf1 a ip4:91.197.29.200 ip4:194.45.94.190 ip4:77.75.255.106 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 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
5 records- SPFv=spf1 a ip4:91.197.29.200 ip4:194.45.94.190 ip4:77.75.255.106 -all
- PDBoaO1TBPEGdbEhjyT43zgZ9VPXoQZP8QZZZR8E2CdiEf4SsLV/BVuaJM6OlMmSMQC6bZD1tZuphjg9Wf0GYg==
- MS=ms32134035
- 5b247244fa3b329b3ed9209498ff8d3b19a07ba5a7c6ab6bf0a57a7904e88e6
- 28d72fd6af0ebe7d49f2c58fe455a74e77cad51656b32258474a837284e9f578
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