Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
voltaire.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 06:38:38 UTC · ↺ Refresh
MX Hostnames
- voltaire-com.mail.protection.outlook.com
MX Priorities
- voltaire-com.mail.protection.outlook.com: 10
A / AAAA Records
- 217.19.248.132 ↩ redirect.idp365.net
Mail Server IPs
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.idp365.net hostmaster.idp365.net 2022110101 28800 1800 604800 3600
Primary NS (mname)
dns1.idp365.net
Admin Email (rname)
hostmaster@idp365.net
Serial
2022110101
Refresh
28800s
Retry
1800s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns3.idp365.net
dns1.idp365.net
dns2.idp365.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1; ri=3600; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 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
2 records- SPFv=spf1 include:spf.protection.outlook.com -all
- MS=ms50100928
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