cbs.cnrs.fr

Email infrastructure report · Last checked 30 Jul 2026, 01:24 UTC

Summary

cbs.cnrs.fr uses Self-hosted / Custom for email and has SPF configured. It is not catch-all.

Mail provider

ProviderSelf-hosted / Custom self-hosted

Primary MXmserv.cbs.cnrs.fr

MX records

Priority	Hostname	IPs
10	mserv.cbs.cnrs.fr	194.167.34.218

Authentication

SPF✓ Present ~all

DKIM? Not detected via common selectors

DMARC✗ Missing

Raw SPF record

v=spf1 ip4:194.167.34.192/26 mx ~all

Email behavior

Catch-all✗ No

Disposable✗ No

Free provider✗ No

STARTTLS✓ Supported

SMTP response6317ms

SMTP banner220 mserv.cbs.cnrs.fr ESMTP Sendmail 8.15.2/8.15.2/Debian-22ubuntu3; Thu, 30 Jul 2026 03:24:36 +0200; (No UCE/UBE) logging access from: ec2-34-242-22-219.eu-west-1.compute.amazonaws.com(OK)-ec2-34-242-22-219.eu-west-1.compute.amazonaws.com [34.242.22.219]

What this means

This domain is missing DKIM, DMARC, which weakens its protection against email spoofing. Adding these records would improve deliverability and reduce the risk of impersonation.

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