cymstar.com

Valid Email Server
Domain Lookup › cymstar.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cymstar.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 04:26:14 UTC · ↺ Refresh

MX Hostnames

  • cymstarllc376.mail.protection.office365.us

MX Priorities

  • cymstarllc376.mail.protection.office365.us: 10

A / AAAA Records

  • 45.45.163.70 ↩ CAE.com

Mail Server IPs

  • 23.103.199.170 ↩ mail-cy1usg020170.inbound.protection.outlook.com
  • 23.103.199.138 ↩ mail-bn3usg020138.inbound.protection.outlook.com
  • 2001:489a:2202:4::10 ↩ mail-bn3usg020010.inbound.protection.outlook.com
  • 2001:489a:2202:5::10 ↩ mail-cy1usg020010.inbound.protection.outlook.com

SOA Record

Raw SOA ns-1449.awsdns-53.org awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-1449.awsdns-53.org
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-186.awsdns-23.com
ns-686.awsdns-21.net
ns-1449.awsdns-53.org
ns-1766.awsdns-28.co.uk

SPF Record

✓ Strict (-all)
v=spf1 include:oktamail.cymstar.com include:spf.protection.office365.us ip4:67.214.97.227 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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

18 records
  • ppe-22c624138d756774b6465e7c9940ecc6f4592657
  • SPFv=spf1 include:oktamail.cymstar.com include:spf.protection.office365.us ip4:67.214.97.227 -all
  • 1password-site-verification=CDMZPJ22LNAKZDGGZG2H7V7SSA
  • 3gs1ksg659q1t9b0bkr2vqdjrvsrf8y6
  • MS=ms96012647
  • ZOOM_verify_h_EyVuZbTFiJP5-cgYxW6Q
  • _b76dzxwz0orilhs0mjq2ph4cqh604iv
  • _db438cc21cb2c32eca36bee747ed6a6a.xlfgrmvvlj.acm-validations.aws.
  • _esp1c5s2jnbyhmprxc6f81f51qxzuyb
  • _itrqz8xatece02zyxk2gazrac8ikpvy
  • _m21oniwypbrjewimti152x3e2dhszhs
  • adobe-idp-site-verification=d43055ac798476ca2761d0e94c29f85fca1a473c92aa819efd47a93ef48de4c6
  • blfmy6rwdws8091n7s8cs6tdwhxpcj7m
  • gcrv5d1cw6tft0xdxf78fhw2870lky61
  • hddj2q7jd13wh9vcvs4tww5yr7lpc8n6
  • ln8mdwblb137pwkgs86kz2r7m6pkk8kx
  • mscid=mlE8veiVt/7r529yA9WfiQUsgWD4uJd/RMalArORMj2+gK3Rrt74FQdpH8YUpGhboaDN6j0UcW7dgyGSa1hRRA==
  • nw2x4pbcchfmg20ns8wh2hbk3bpvw5dh
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