Werk #17166: HTML Email: Handle SMTP return code 554 as permanent error

Component

Notifications

Title

HTML Email: Handle SMTP return code 554 as permanent error

Date

Sep 2, 2024

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.4.0b1	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.3.0p15	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.2.0p33	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

If you used "Enable synchronous delivery via SMTP" the return code 554 was not handled as a permanent error, leading to multiple delivery attempts.

This return code is now handled as permanent error.