Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tubs.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-17 18:53:11 UTC · ↺ Refresh
MX Hostnames
- mxlb.ispgateway.de
- mx.tub.co
MX Priorities
- mx.tub.co: 10
- mxlb.ispgateway.de: 100
A / AAAA Records
- 92.205.198.48 ↩ sh22873.ispgateway.de
- 2a00:116a:10c:ca80:: ↩ sh22873.ispgateway.de
Mail Server IPs
- 130.149.110.191 ↩ mx.tuc.systems
- 80.67.18.126 ↩ mxlb.ispgateway.de
SOA Record
Raw SOA
ns23.domaincontrol.com dns.jomax.net 2025121107 28800 7200 604800 600
Primary NS (mname)
ns23.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025121107
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns23.domaincontrol.com
ns24.domaincontrol.com
SPF Record
✓ Soft Fail (~all)
v=spf1 a:mx.tuc.systems a:tubs.de include:tub.co include:ispgateway.de ip4:90.187.13.5 ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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 a:mx.tuc.systems a:tubs.de include:tub.co include:ispgateway.de ip4:90.187.13.5 ~all
- sendinblue-code:5bfac4276af3aca5f87f4400e7feca17
Full email verification for tubs.de
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