Emails from StandardBank.co.za to a cPanel hosted server fails with bodyhash_mismatch – DKIM issues

Email from standardbank.co.za might fail with bodyhash_mismatch.

Since it’s a bank most people panic and think it’s their own email systems that are at fault.

Actually, it takes two to tango and big companies also have problems.

In order to settle the customer services your cPanel side, you can do this:

WHM >> Exim Configuration Manager, try turning the following option off: Allow DKIM verification for incoming messages

Updating “Allow DKIM verification for incoming messages” from “On” to “Off”.
“Allow DKIM verification for incoming messages” was updated.

This is anyway a non default. You’ll probably have more spam but less problems.

Below is an an example received from MS Office 365:

Example:

Original Message Details
Created Date: 1/10/2025 1:23:11 PM
Sender Address: [email protected]
Recipient Address: [email protected]
Subject: Whatever – Updating information
Error Details
Error: 550 5.0.350 Remote server returned an error -> 550 DKIM: encountered the following problem validating standardbank.co.za:;bodyhash_mismatch
Message rejected by: our-server.example.com
Notification Details
Sent by: DBAPR08MB5574.eurprd08.prod.outlook.com

The message is pretty ominous. It means it was modified in transit. Good luck escalating to Standard Bank.

 

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