igb-berlin.de

Email infrastructure report · Last checked 28 Jul 2026, 21:04 UTC

Summary

igb-berlin.de uses Self-hosted / Custom for email and has SPF, DKIM, and DMARC configured. It is not catch-all.

Mail provider

ProviderSelf-hosted / Custom self-hosted

Primary MXa2421.mx.srv.dfn.de

MX records

Priority	Hostname	IPs
10	a2421.mx.srv.dfn.de	194.95.232.205
10	c2421.mx.srv.dfn.de	194.95.238.205
10	b2421.mx.srv.dfn.de	194.95.234.205

Authentication

SPF✓ Present ~all

DKIM✓ Found (selectors: mail)

DMARC✓ Present p=quarantine

Raw SPF record

v=spf1 a:spirula.igb-berlin.de ip4:62.141.187.31 include:_spf.google.com ~all

Raw DMARC record

v=DMARC1;p=quarantine;rua=mailto:dmarc@igb-berlin.de

Email behavior

Catch-all✗ No

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response5607ms

SMTP banner220-a2421.mx.srv.dfn.de ESMTP Postfix 220 a2421.mx.srv.dfn.de ESMTP Postfix

What this means

This domain has strong email authentication. Messages claiming to come from @igb-berlin.de can be cryptographically verified by recipients, making spoofing difficult. Deliverability for legitimate mail should be good.

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