Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
siebertwilliams.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 17:43:33 UTC · ↺ Refresh
MX Hostnames
- siebertwilliams-com.mail.protection.outlook.com
MX Priorities
- siebertwilliams-com.mail.protection.outlook.com: 0
A / AAAA Records
- 23.236.62.147 ↩ 147.62.236.23.bc.googleusercontent.com
Mail Server IPs
- 52.101.11.3 ↩ mail-sn1pr0501cu00103.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 52.101.11.17 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f901::1 ↩ mail-bl0pr02cu00601.inbound.protection.outlook.com
- 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-703.awsdns-23.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-703.awsdns-23.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-79.awsdns-09.com
ns-1321.awsdns-37.org
ns-1548.awsdns-01.co.uk
ns-703.awsdns-23.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.bluematrix.com include:_spf.salesforce.com include:spf.constantcontact.com include:aspmx.pardot.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 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
3 records- pardot1009092=25d1cc5640b1d2730921e3fb24f29b7a6ba3b77a3f175abcc5abd5adfc26890b
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.bluematrix.com include:_spf.salesforce.com include:spf.constantcontact.com include:aspmx.pardot.com -all
- duo_sso_verification=3tW8C8Nu1S0va7HsllhIGc04VGXNEwD5fcHg8NxbOt290eJVyfd2ArrVFQehx2vO
Full email verification for siebertwilliams.com
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