Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
strongholdcorp.net
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 04:45:16 UTC · ↺ Refresh
MX Hostnames
- strongholdcorp-net.mail.protection.outlook.com
MX Priorities
- strongholdcorp-net.mail.protection.outlook.com: 0
A / AAAA Records
- 208.98.35.197 ↩ idim4.midiasucesso.info
Mail Server IPs
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
- 2a01:111:f403:f802::2 ↩ mail-sj2pr05cu00202.inbound.protection.outlook.com
- 2a01:111:f403:c946::2 ↩ mail-ch4pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
SOA Record
Raw SOA
primary.guardeddns.net dns-admin.guardeddns.net 369 28800 450 1209600 900
Primary NS (mname)
primary.guardeddns.net
Admin Email (rname)
dns-admin@guardeddns.net
Serial
369
Refresh
28800s
Retry
450s
Expire
1209600s
Minimum TTL
900s
Nameservers (NS)
ns1.omnis.com
ns2.omnisdns.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf-us.emailsignatures365.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 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 include:spf.protection.outlook.com include:spf-us.emailsignatures365.com -all
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