gcb.de

Valid Email Server
Domain Lookup › gcb.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
gcb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-04 18:46:37 UTC · ↺ Refresh

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MX Hostnames

  • gcb-de.mail.protection.outlook.com

MX Priorities

  • gcb-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 78.47.17.6 ↩ dedi284.your-server.de

Mail Server IPs

  • 52.101.103.140 ↩ mail-miypr02cu00204.inbound.protection.outlook.com
  • 52.101.209.28 ↩ mail-cpjpr05cu00104.inbound.protection.outlook.com
  • 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::26 ↩ mail-am8pr83cu00106.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com

SOA Record

Raw SOA hydrogen.ns.hetzner.com dns.hetzner.com 2026041400 86400 10800 3600000 3600
Primary NS (mname)
hydrogen.ns.hetzner.com
Admin Email (rname)
dns@hetzner.com
Serial
2026041400
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
3600s

Nameservers (NS)

oxygen.ns.hetzner.com
helium.ns.hetzner.de
hydrogen.ns.hetzner.com

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx ip4:46.137.96.145 ip4:54.246.220.150 ip4:54.246.224.90 ip4:199.193.197.94 ip4:93.191.162.30 ip4:54.236.128.150 ip4:54.236.109.30 ip4:54.252.177.62 ip4:54.252.156.126 ip4:54.251.156.245 ip4:54.251.156.250 ip4:52.60.95.88 ip4:93.191.162.0/24 ip4:93.191.164.0/24 include:agenturserver.de include:spf.crsend.com include:spf.protection.outlook.com include:spf.emailsignatures365.com ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate 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

✗ 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
  • google-site-verification=w75TAtTKlKRMGTWaDe6fXzC2OTRiG3qSydMP0Z-DM_A
  • SPFv=spf1 a mx ip4:46.137.96.145 ip4:54.246.220.150 ip4:54.246.224.90 ip4:199.193.197.94 ip4:93.191.162.30 ip4:54.236.128.150 ip4:54.236.109.30 ip4:54.252.177.62 ip4:54.252.156.126 ip4:54.251.156.245 ip4:54.251.156.250 ip4:52.60.95.88 ip4:93.191.162.0/24 ip4:93.191.164.0/24 include:agenturserver.de include:spf.crsend.com include:spf.protection.outlook.com include:spf.emailsignatures365.com ~all
  • MS=ms57876224
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