Undelivered Mail Returned to Sender

This is the mail system at host postfix-catchall-postfix-catchall-chart-85bbf6b8d-zbsqt.localdomain.

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The mail system

: Host or domain name not found. Name service error for
name=yahoo.com type=MX: Host not found, try again

Reporting-MTA: dns; postfix-catchall-postfix-catchall-chart-85bbf6b8d-zbsqt.localdomain
X-Postfix-Queue-ID: 79C67B2372E
X-Postfix-Sender: rfc822; vdvd@withoutemail.com
Arrival-Date: Wed, 26 Aug 2026 13:36:18 +0000 (UTC)

Final-Recipient: rfc822; segver821@yahoo.com
Original-Recipient: rfc822;segver821@yahoo.com
Action: failed
Status: 4.4.3
Diagnostic-Code: X-Postfix; Host or domain name not found. Name service error
for name=yahoo.com type=MX: Host not found, try again