Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sack.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 17:09:11 UTC · ↺ Refresh
MX Hostnames
- asg.otto-schmidt.de
- mailrelay.netcologne.de
- asg2.otto-schmidt.de
MX Priorities
- mailrelay.netcologne.de: 10
- asg2.otto-schmidt.de: 50
- asg.otto-schmidt.de: 20
A / AAAA Records
- 91.203.203.119 (no PTR)
Mail Server IPs
- 194.8.194.96 ↩ mailrelay.netcologne.de
- 62.214.13.178 ↩ asg.otto-schmidt.de
- 194.8.213.197 ↩ asg.otto-schmidt.de
SOA Record
Raw SOA
dns11.netcologne.de hostmaster.netcologne.de 2025121902 10800 3600 3600000 3600
Primary NS (mname)
dns11.netcologne.de
Admin Email (rname)
hostmaster@netcologne.de
Serial
2025121902
Refresh
10800s
Retry
3600s
Expire
3600000s
Minimum TTL
3600s
Nameservers (NS)
dns11.netcologne.de
dns14.netcologne.de
dns13.netcologne.de
dns12.netcologne.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:_spf.sendnode.com ip4:194.8.213.197 ip4:62.214.13.178 ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;rua=mailto:[email protected];ruf=mailto:[email protected];fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 a mx include:_spf.sendnode.com ip4:194.8.213.197 ip4:62.214.13.178 ~all
- MS=ms78612567
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