Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
bbs3-ol.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 19:58:29 UTC · ↺ Refresh
MX Hostnames
- mailgw02.oledu.de
- mailgw01.oledu.de
MX Priorities
- mailgw01.oledu.de: 0
- mailgw02.oledu.de: 20
A / AAAA Records
- 152.53.129.130 ↩ v2202411124015296930.bestsrv.de
Mail Server IPs
- 213.183.186.50 ↩ mailgw01.oledu.de
- 213.183.186.51 ↩ mailgw02.oledu.de
SOA Record
Raw SOA
ns1070.ui-dns.de hostmaster.1und1.com 2017060330 28800 7200 604800 600
Primary NS (mname)
ns1070.ui-dns.de
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060330
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1086.ui-dns.biz
ns1033.ui-dns.com
ns1070.ui-dns.de
ns1034.ui-dns.org
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:213.183.186.50 ip4:213.183.186.51 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- apple-domain-verification=gtvI1XEvB2Ukzo6g
- MS=ms61349720
- SPFv=spf1 include:spf.protection.outlook.com ip4:213.183.186.50 ip4:213.183.186.51 -all
- v=verifydomain MS=ms74830620
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