syzygy.us

Valid Email Server
Domain Lookup › syzygy.us

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
syzygy.us
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 13:10:56 UTC · ↺ Refresh

MX Hostnames

  • syzygy-us.mail.protection.outlook.com

MX Priorities

  • syzygy-us.mail.protection.outlook.com: 0

A / AAAA Records

  • 52.18.48.88 ↩ ec2-52-18-48-88.eu-west-1.compute.amazonaws.com
  • 99.80.19.160 ↩ ec2-99-80-19-160.eu-west-1.compute.amazonaws.com

Mail Server IPs

  • 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
  • 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
  • 52.101.68.32 ↩ mail-db3pr0202cu00200.inbound.protection.outlook.com
  • 52.101.73.19 ↩ mail-as8pr04cu00803.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com

SOA Record

Raw SOA ns0.syzygy.co.uk dns-tech.syzygy.co.uk 1 7200 900 1209600 86400
Primary NS (mname)
ns0.syzygy.co.uk
Admin Email (rname)
dns-tech@syzygy.co.uk
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns0.syzygy.co.uk
ns1.syzygy.net
ns2.syzygy.us
ns3.syzygy.de

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ 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
✓ Public key: 392 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

4 records
  • openai-domain-verification=dv-zPHHBrO91HtYbDo7HOnbsWoZ
  • SPFv=spf1 include:spf.protection.outlook.com -all
  • _7n2z0wwsvfwoe87sr7kwc2fmnhs2m41
  • monday-com-verification=GlfD9ToFTT94SjgrrsvUEdgVZJQajLJXY1sfGWda574
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