sir.com

Valid Email Server
Domain Lookup › sir.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sir.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-19 03:12:46 UTC · ↺ Refresh

MX Hostnames

  • sir-com.mail.protection.outlook.com

MX Priorities

  • sir-com.mail.protection.outlook.com: 10

A / AAAA Records

  • 18.173.132.48 ↩ server-18-173-132-48.jfk52.r.cloudfront.net
  • 18.173.132.81 ↩ server-18-173-132-81.jfk52.r.cloudfront.net
  • 18.173.132.85
  • 18.173.132.61

Mail Server IPs

  • 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
  • 52.101.9.20 ↩ mail-bl0pr02cu00604.inbound.protection.outlook.com
  • 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 52.101.10.16 ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:c902::1 ↩ mail-sj2pr05cu00401.inbound.protection.outlook.com
  • 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:f909:: ↩ mail-bn6pr04cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1466.awsdns-55.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1466.awsdns-55.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1466.awsdns-55.org
ns-2017.awsdns-60.co.uk
ns-377.awsdns-47.com
ns-759.awsdns-30.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:64.37.197.154 ip4:209.11.106.0/24 ip4:64.37.197.219 mx a:svvssmtp2.sothebysrealty.com mx a:svvssmtp.sothebysrealty.com include:spf.usa.net
📊 DNS lookups: 5/10

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

4 records
  • include:spf.mandrillapp.com
  • include:spf.protection.outlook.com include:sendgrid.net ~all
  • SPFv=spf1 ip4:64.37.197.154 ip4:209.11.106.0/24 ip4:64.37.197.219 mx a:svvssmtp2.sothebysrealty.com mx a:svvssmtp.sothebysrealty.com include:spf.usa.net
  • MS=ms55815401
Full email verification for sir.com

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