Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
polartherm.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-25 01:24:49 UTC · ↺ Refresh
MX Hostnames
- utm01.polartherm.de
- utm02.polartherm.de
MX Priorities
- utm02.polartherm.de: 20
- utm01.polartherm.de: 10
A / AAAA Records
- 217.160.0.15 ↩ 217-160-0-15.elastic-ssl.ui-r.com
- 2001:8d8:100f:f000::29c ↩ 2001-08d8-100f-f000-0000-0000-0000-029c.elastic-ssl.ui-r.com
Mail Server IPs
- 87.128.17.116 ↩ p57801174.dip0.t-ipconnect.de
- 80.147.195.223 ↩ utm01.polartherm.de
SOA Record
Raw SOA
ns1110.ui-dns.com hostmaster.schlund.de 2017070438 28800 7200 604800 300
Primary NS (mname)
ns1110.ui-dns.com
Admin Email (rname)
hostmaster@schlund.de
Serial
2017070438
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1110.ui-dns.biz
ns1110.ui-dns.de
ns1110.ui-dns.org
ns1110.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 a mx a:utm01.polartherm.de a:utm02.polartherm.de a:itbs1.it-schlabach.de -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- SPFv=spf1 a mx a:utm01.polartherm.de a:utm02.polartherm.de a:itbs1.it-schlabach.de -all
- _globalsign-domain-verification=FZU1U0b20cHnOSEe9tdjuCVp--CmfLHC-fSeLEbB2X
- MS=ms92827564
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