onsiteris.com

Valid Email Server
Domain Lookup › onsiteris.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
onsiteris.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 20:48:11 UTC · ↺ Refresh

MX Hostnames

  • onsiteris-com.mail.protection.outlook.com

MX Priorities

  • onsiteris-com.mail.protection.outlook.com: 0

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
  • 52.101.41.180 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
  • 52.101.50.13 ↩ mail-mw2pr02cu00605.inbound.protection.outlook.com
  • 52.101.194.19 ↩ mail-ch5pr02cu00303.inbound.protection.outlook.com
  • 2a01:111:f403:c902::2 ↩ mail-sj0pr03cu01602.inbound.protection.outlook.com
  • 2a01:111:f403:f905::3 ↩ mail-dm5pr02cu00203.inbound.protection.outlook.com
  • 2a01:111:f403:c946::6 ↩ mail-ch5pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com

SOA Record

Raw SOA dahlia.ns.cloudflare.com dns.cloudflare.com 2399939457 10000 2400 604800 1800
Primary NS (mname)
dahlia.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399939457
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

lynn.ns.cloudflare.com
dahlia.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.smtp.com include:spf.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

6 records
  • SPFv=spf1 include:spf.protection.outlook.com include:_spf.smtp.com include:spf.emailsignatures365.com -all
  • MS=ms76520255
  • _cad7yo270zkac5a4bwz61ifbsivnyr5
  • e4ifd05djkh750iosirjt4impb
  • google-site-verification=oEK6mke1XDaeIjx5hHeKfQ2_zNtIoYSYBYDU7HKssnA
  • smartsheet-site-validation=DKB1RM1yf7q7QuFRKnycXx_O_M0bnGVG
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