sizestream.com

Valid Email Server
Domain Lookup › sizestream.com

Domain Overview

DNS: ✓ 20d ago Checker: ✓ 20d ago
sizestream.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 01:53:59 UTC · ↺ Refresh

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MX Hostnames

  • sizestream-com.mail.protection.outlook.com

MX Priorities

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

A / AAAA Records

  • 67.225.186.125 (no PTR)

Mail Server IPs

  • 52.101.50.10 ↩ mail-mw2pr02cu00502.inbound.protection.outlook.com
  • 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
  • 52.101.9.2 ↩ mail-mn2pr02cu00202.inbound.protection.outlook.com
  • 52.101.40.0 ↩ mail-cy5pr03cu00300.inbound.protection.outlook.com
  • 2a01:111:f403:c801:: ↩ mail-sa9pr02cu00200.inbound.protection.outlook.com
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1517.awsdns-61.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1517.awsdns-61.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1517.awsdns-61.org
ns-1989.awsdns-56.co.uk
ns-375.awsdns-46.com
ns-650.awsdns-17.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:3415733.spf01.hubspotemail.net -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

11 records
  • stripe-verification=3349208f2aae645bfefabe4380f2d40c9dbf42eafd9f45e1748964d3451790f3
  • twilio-domain-verification=422228eec73a66e24cac504e9208a9a2
  • SPFv=spf1 include:spf.protection.outlook.com include:3415733.spf01.hubspotemail.net -all
  • MS=ms22028748
  • anthropic-domain-verification-kpdnz7=RJA72tnEuuOtL8CHakr4fSX8p
  • apple-domain-verification=9mZu9QEEgJ9OnNja
  • atlassian-domain-verification=U1toERbAyhWwaEDVLz4NvmO0IaSYIgqkBNxcB2pickLxkzj8K0RyYhhjkkVJQvdc
  • google-site-verification=bH7a6wV9-oV2-z5dKB7YTEi5etnGR995cBdq1Br2XBY
  • google-site-verification=yvcRh5dlfEgAkc9J6ZqF5o1rRk5dR_A_Tq0VsaFfjT4
  • knowbe4-site-verification=36aff79d72633e5bede2f03c9d53cc4d
  • smtpapi._domainkey k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O+2J9N14hRprzByFwfQW76yojh54Xu3uSbQ3JP0A7k8o8GutRF8zbFUA8n0ZH2y0cIEjMliXY4W4LwPA7m4q0ObmvSjhd63O9d8z1XkUBwIDAQAB
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