Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
discovercorona.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 08:30:42 UTC · ↺ Refresh
MX Hostnames
- discovercorona-com.mail.protection.outlook.com
MX Priorities
- discovercorona-com.mail.protection.outlook.com: 10
A / AAAA Records
- 135.84.124.41 (no PTR)
Mail Server IPs
- 52.101.8.50 ↩ mail-dm6pr09cu00202.inbound.protection.outlook.com
- 52.101.8.52 ↩ mail-ds0pr09cu00104.inbound.protection.outlook.com
- 52.101.11.12 ↩ mail-sa9pr09cu00104.inbound.protection.outlook.com
- 52.101.9.19 ↩ mail-blapr09cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f904::1 ↩ mail-ds0pr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f90e::1 ↩ mail-sa9pr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f900::1 ↩ mail-blapr09cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f904:: ↩ mail-dm6pr09cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-33.azure-dns.com hostmaster.discovercorona.com 2018011184 3600 600 1209600 3600
Primary NS (mname)
ns1-33.azure-dns.com
Admin Email (rname)
hostmaster@discovercorona.com
Serial
2018011184
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns3-33.azure-dns.org
ns4-33.azure-dns.info
ns1-33.azure-dns.com
ns2-33.azure-dns.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:64.29.226.0/24 ip4:52.244.76.18 include:spf.protection.outlook.com include:spf-westus.emailsignatures365.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
1 record- SPFv=spf1 ip4:64.29.226.0/24 ip4:52.244.76.18 include:spf.protection.outlook.com include:spf-westus.emailsignatures365.com -all
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