Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zum.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 16:31:07 UTC · ↺ Refresh
MX Hostnames
- zumserver.zum.de
MX Priorities
- zumserver.zum.de: 10
A / AAAA Records
- 46.4.65.203 ↩ zumserver.zum.de
Mail Server IPs
- 46.4.65.203 ↩ zumserver.zum.de
- 2a01:4f8:140:23eb::2 ↩ metis.zum.de
SOA Record
Raw SOA
ns1.first-ns.de dns.hetzner.com 2025092801 14400 1800 604800 7200
Primary NS (mname)
ns1.first-ns.de
Admin Email (rname)
dns@hetzner.com
Serial
2025092801
Refresh
14400s
Retry
1800s
Expire
604800s
Minimum TTL
7200s
Nameservers (NS)
robotns3.second-ns.com
ns1.first-ns.de
robotns2.second-ns.de
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:46.4.65.203/32 mx:metis.zum.de mx:zumserver.zum.de ip4:88.99.253.153/32 ip4:116.202.233.184/32 ip4:168.119.145.97/32 ip6:2a01:4f8:251:85d::2 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
mail._domainkey
dkim._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 ip4:46.4.65.203/32 mx:metis.zum.de mx:zumserver.zum.de ip4:88.99.253.153/32 ip4:116.202.233.184/32 ip4:168.119.145.97/32 ip6:2a01:4f8:251:85d::2 -all
- _acme-challenge.zum.de=tvGkjf0_KK1Jku6woc6eYyH7UluTc9gg5HKU3JFcUiY
Full email verification for zum.de
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