schubert-international.com

Valid Email Server
Domain Lookup › schubert-international.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
schubert-international.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 21:02:07 UTC · ↺ Refresh

MX Hostnames

  • mx-01-eu-central-1.prod.hydra.sophos.com
  • mx-02-eu-central-1.prod.hydra.sophos.com

MX Priorities

  • mx-02-eu-central-1.prod.hydra.sophos.com: 2
  • mx-01-eu-central-1.prod.hydra.sophos.com: 1

A / AAAA Records

  • 188.245.111.247 ↩ dedivirt3923.your-server.de
  • 2a01:4f8:1c1e:f453::2 ↩ dedivirt3923.your-server.de

Mail Server IPs

  • 18.159.237.67 ↩ ec2-18-159-237-67.eu-central-1.compute.amazonaws.com
  • 52.57.79.230 ↩ ec2-52-57-79-230.eu-central-1.compute.amazonaws.com

SOA Record

Raw SOA ns1.your-server.de postmaster.your-server.de 2026021900 86400 10800 3600000 3600
Primary NS (mname)
ns1.your-server.de
Admin Email (rname)
postmaster@your-server.de
Serial
2026021900
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

ns3.second-ns.de
ns.second-ns.com
ns1.your-server.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:78.47.60.121 ip6:2a01:4f8:1c1e:f453::2 a:mail.dedivirt3923.your-server.de include:_spf.prod.hydra.sophos.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • sophos-domain-verification=8e621787d66cf50c9a59c051de6616df2304f0c4
  • SPFv=spf1 ip4:78.47.60.121 ip6:2a01:4f8:1c1e:f453::2 a:mail.dedivirt3923.your-server.de include:_spf.prod.hydra.sophos.com -all
  • linkedin-site-verification=e84e51ac-2c61-4d92-b959-b21501448f67
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