Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
passero.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 00:07:33 UTC · ↺ Refresh
MX Hostnames
- passero-com.mail.protection.outlook.com
MX Priorities
- passero-com.mail.protection.outlook.com: 10
A / AAAA Records
- 50.116.60.221 ↩ www.passero.com
Mail Server IPs
- 52.101.42.18 ↩ mail-co1pr03cu00302.inbound.protection.outlook.com
- 40.93.192.1 ↩ mail-dm5pr02cu00201.inbound.protection.outlook.com
- 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
- 52.101.9.17 (no PTR)
- 2a01:111:f403:f90d:: ↩ mail-sn1pr0501cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c92c::2 ↩ mail-dm2pr04cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c902::4 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
ns9.worldnic.com namehost.worldnic.com 125111813 10800 3600 604800 3600
Primary NS (mname)
ns9.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125111813
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns9.worldnic.com
ns10.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 a mx a:linded38.corp-com.com ip4:67.97.247.170 ip4:45.33.74.145 include:spf.protection.outlook.com include:_spf.360blast.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- duo_sso_verification=qGAHUj5pVP2zBONXIND5aQ3zwqr0A4qlXeQhVKz5Iri7JxQQ0JPUAUdGhojGNC9v
- 554gmg40k07f5se2kofgu02bsk
- SPFv=spf1 a mx a:linded38.corp-com.com ip4:67.97.247.170 ip4:45.33.74.145 include:spf.protection.outlook.com include:_spf.360blast.com -all
- autodesk-domain-verification=TSXBXUOvhezO1REPQVim
- google-site-verification=drYuuKe7K9leBom5nBmO07zyo8kK-wArNonINnSzGAc
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