Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
busitec.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 17:32:10 UTC · ↺ Refresh
MX Hostnames
- busitec-de.mail.protection.outlook.com
MX Priorities
- busitec-de.mail.protection.outlook.com: 0
A / AAAA Records
- 202.61.233.207 ↩ ae9cf.netcup.net
- 2a03:4000:61:e22f::22:9138 (no PTR)
Mail Server IPs
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.11 ↩ mail-am1pr04cu00103.inbound.protection.outlook.com
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca04::1 ↩ mail-db7pr03cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
root-dns.netcup.net dnsadmin.netcup.net 2026032446 28800 7200 1209600 86400
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2026032446
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
second-dns.netcup.net
third-dns.netcup.net
root-dns.netcup.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:sendgrid.net include:ispgateway.de ip4:93.241.233.74 include:marketing.dynamics.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];adkim=r;aspf=r;fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 392 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
2 records- google-site-verification=zxlMRf4aSjPp-LN1AiyDtQGqsUBRYNbOlprZXdn6qpE
- SPFv=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:sendgrid.net include:ispgateway.de ip4:93.241.233.74 include:marketing.dynamics.com -all
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