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Unable to create a new mailbox on a server with SmarterMail: Incorrect Content-Type: must be textual to extract_string, JSON to extract_json

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Ivan Postnikov
Updated
kb: technical

Symptoms

Updating SmarterMail to version 100.0.8495 or higher breaks the integration. For example, new mailboxes cannot be created:

mailmng failed: Incorrect Content-Type: must be textual to extract_string, JSON to extract_json.

Cause

In the recent SmarterMail update API, which was used by Plesk to manage mail server was seriously reworked, The task to rework how Plesk manages SmarterMail has ID PPPM-13966.

Resolution

To apply a custom fix:

  1. Download the attached custom fix.
  2. In Plesk services Monitor: stop Plesk Management Service
  3. Unpack files from the attached archive to %plesk_bin% folder
  4. Start Plesk Management Service

Comments

1 comment

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    Alessio De Simone (Edited )

    Even on the latest version of Plesk 18.0.58 #2 (with SmarterMail Build 8797), which appears to have the most recent dlls, this bug is still present and the custom-fix files do not resolve it, in particular this bug often occurs with Plesk Migrator.

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