zimmermann.de

Valid Email Server
Domain Lookup › zimmermann.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
zimmermann.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-30 18:25:57 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • mx-01-eu-central-1.prod.hydra.sophos.com: 10
  • mx-02-eu-central-1.prod.hydra.sophos.com: 20

A / AAAA Records

  • 185.243.132.186 ↩ r33341.agenturserver.it
  • 2a03:2a00:1800:2::ac12:2c0f ↩ r33341.agenturserver.it

Mail Server IPs

  • 52.57.183.85 ↩ ec2-52-57-183-85.eu-central-1.compute.amazonaws.com
  • 18.159.80.41 ↩ ec2-18-159-80-41.eu-central-1.compute.amazonaws.com

SOA Record

Raw SOA ns1.gwport.de root.ns1.gwport.de 1773660688 10800 3600 604800 3600
Primary NS (mname)
ns1.gwport.de
Admin Email (rname)
root@ns1.gwport.de
Serial
1773660688
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns2.gwport.de
ns1.gwport.de

SPF Record

✓ Strict (-all)
v=spf1 a mx include:_spf_eucentral1.prod.hydra.sophos.com ip4:85.13.143.29/32 ip4:178.77.121.129/26 ip4:46.4.238.128/29 ip4:158.69.163.48/29 ip4:194.42.96.0/24 ip6:2a01:4f8:10a:f09::/64 include:_spf.smtp.com include:spf.protection.outlook.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=none; rf=afrf; fo=1; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: none

DKIM Selectors

✓ 1 found
s1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1

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

All TXT Records

4 records
  • site-verification=d6db06e710405af0846a7080a
  • sophos-domain-verification=fb50d862b9cf23b8e6bf989d98a44a3e76047b3f
  • SPFv=spf1 a mx include:_spf_eucentral1.prod.hydra.sophos.com ip4:85.13.143.29/32 ip4:178.77.121.129/26 ip4:46.4.238.128/29 ip4:158.69.163.48/29 ip4:194.42.96.0/24 ip6:2a01:4f8:10a:f09::/64 include:_spf.smtp.com include:spf.protection.outlook.com -all
  • MS=5D0F7C70C94985D9729D25CC3D1B5E49268EA003
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