Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
fritz-elfert.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 10:14:11 UTC · ↺ Refresh
MX Hostnames
- listserv.isdn4linux.de
MX Priorities
- listserv.isdn4linux.de: 10
A / AAAA Records
- 87.106.17.67 ↩ listserv.isdn4linux.de
Mail Server IPs
- 87.106.17.67 ↩ listserv.isdn4linux.de
- 2001:8d8:912:a9e:ab05:ddc6:eb4a:1ffd ↩ listserv.isdn4linux.de
SOA Record
Raw SOA
new.isdn4linux.de fritz.fritz-elfert.de 2026032000 28800 7200 604800 86400
Primary NS (mname)
new.isdn4linux.de
Admin Email (rname)
fritz@fritz-elfert.de
Serial
2026032000
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns5.dnsmadeeasy.com
new.isdn4linux.de
ns6.dnsmadeeasy.com
ns7.dnsmadeeasy.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:87.106.17.67 ip6:2001:8d8:912:a9e:ab05:ddc6:eb4a:1ffd -all
📊 DNS lookups: 0/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected];
✓ 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
2 records- SPFv=spf1 ip4:87.106.17.67 ip6:2001:8d8:912:a9e:ab05:ddc6:eb4a:1ffd -all
- google-site-verification=uQEDzgIdtky65L_bBmzLH5uWkK0wWBclts1knmOtYDg
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