Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zfos.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-07-13 14:04:09 UTC · ↺ Refresh
MX Hostnames
- mail.zfos.de
MX Priorities
- mail.zfos.de: 10
A / AAAA Records
- 217.160.0.117 ↩ 217-160-0-117.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::284 ↩ 2001-08d8-100f-f000-0000-0000-0000-0284.elastic-ssl.ui-r.com
Mail Server IPs
- 212.114.254.164 ↩ mail.zfos.de
SOA Record
Raw SOA
ns1045.ui-dns.org hostmaster.1und1.com 2017060157 28800 7200 604800 600
Primary NS (mname)
ns1045.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060157
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1120.ui-dns.de
ns1045.ui-dns.org
ns1028.ui-dns.com
ns1067.ui-dns.biz
SPF Record
✓ Strict (-all)
v=spf1 a:mail.zfos.de ip4:212.114.254.164 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; adkim=s; aspf=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 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
1 record- SPFv=spf1 a:mail.zfos.de ip4:212.114.254.164 -all
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