Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
asb-heilbronn.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-28 02:57:06 UTC · ↺ Refresh
MX Hostnames
- mx01.kundenserver.de
- mx00.kundenserver.de
- owa.asb-heilbronn.de
MX Priorities
- owa.asb-heilbronn.de: 10
- mx01.kundenserver.de: 20
- mx00.kundenserver.de: 20
A / AAAA Records
- 93.191.50.116 ↩ nb2336.yas.netbuild.net
Mail Server IPs
- 109.205.194.26 ↩ owa.asb-heilbronn.de
- 217.72.192.67 ↩ mx01.kundenserver.de
- 212.227.15.41 ↩ mx00.kundenserver.de
SOA Record
Raw SOA
ns1050.ui-dns.biz hostmaster.schlund.de 2016112685 28800 7200 604800 300
Primary NS (mname)
ns1050.ui-dns.biz
Admin Email (rname)
hostmaster@schlund.de
Serial
2016112685
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1050.ui-dns.de
ns1050.ui-dns.biz
ns1050.ui-dns.org
ns1050.ui-dns.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf-eu.ionos.com include:spf.de.umantis.com include:_spf.kundenserver.de include:spf.protection.outlook.com ip4:2.207.153.18/32 ip4:109.205.194.26/32 ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;pct=100;rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
3 records- SPFv=spf1 include:_spf-eu.ionos.com include:spf.de.umantis.com include:_spf.kundenserver.de include:spf.protection.outlook.com ip4:2.207.153.18/32 ip4:109.205.194.26/32 ~all
- v=verifydomain MS=6077510
- MS=D3223C7F63253CF495E82EE06BE6C8F2B9B108BB
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