Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
serra.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-24 22:41:42 UTC · ↺ Refresh
MX Hostnames
- serra-de.mail.protection.outlook.com
MX Priorities
- serra-de.mail.protection.outlook.com: 0
A / AAAA Records
- 20.105.216.33 (no PTR)
Mail Server IPs
- 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
- 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.mybizcloud.at registry.mybizcloud.at 2024111106 43200 5400 1209600 3600
Primary NS (mname)
ns1.mybizcloud.at
Admin Email (rname)
registry@mybizcloud.at
Serial
2024111106
Refresh
43200s
Retry
5400s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns1.mybizcloud.at
ns3.mybizcloud.at
ns2.mybizcloud.at
SPF Record
✓ Strict (-all)
v=spf1 ip4:213.174.230.154 ip4:213.174.230.155 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict 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
✓ 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- SPFv=spf1 ip4:213.174.230.154 ip4:213.174.230.155 include:spf.protection.outlook.com -all
- nitro-verification-code=LTU4Njg2NzI0NTQ0NTEzMjM0MjQ=
- docusign=0c81ccb2-1ead-4cbf-8770-8bc5a86d4718
- cisco-ci-domain-verification=4e95a634d3bcdb9443f529330d0e7f1acc2e2bb3b8a58aa2f2828128ad5e7d20
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