Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
herrmann.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 18:45:44 UTC · ↺ Refresh
MX Hostnames
- mail.tcrz.net
MX Priorities
- mail.tcrz.net: 3
A / AAAA Records
- 194.150.226.152 (no PTR)
Mail Server IPs
- 193.23.119.33 ↩ mail.tcrz.net
SOA Record
Raw SOA
ns1.netop.de soa.netop.de 2024031800 28800 7200 864000 86400
Primary NS (mname)
ns1.netop.de
Admin Email (rname)
soa@netop.de
Serial
2024031800
Refresh
28800s
Retry
7200s
Expire
864000s
Minimum TTL
86400s
Nameservers (NS)
ns2.netop.de
ns1.netop.de
SPF Record
✓ Strict (-all)
v=spf1 mx a include:spf.nl2go.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; ri=86400
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx a include:spf.nl2go.com -all
- MS=48DB667DE922DC76468E839A08173C8D4D3CE8BE
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