Synology MailPlus Server 3.1.6-11332 Warning on DSM 7.1.1-42962 Update 8: mimedefang-multiplexor Failed to Get Domain ID

Synology MailPlus Server 3.1.6-11332 Warning DSM 7.1.1-42962 Update 8: mimedefang-multiplexor Failed to Get Domain ID

In this article, we will discuss the warning message that appears in the /volume1/@maillog/maillog file of Synology MailPlus Server 3.1.6-11332 after updating to DSM 7.1.1-42962 Update 8. The warning message is related to the mimedefang-multiplexor failing to get the domain ID.

Environment

The warning message appears in the /volume1/@maillog/maillog file of Synology MailPlus Server 3.1.6-11332 after updating to DSM 7.1.1-42962 Update 8.

Symptom

The warning message in the /volume1/@maillog/maillog file reads as follows:

mimedefang-multiplexor[30157]: Failed to get domain_id for domain "example.com"

Cause

The cause of the warning message is not explicitly stated in the message itself. However, it is possible that the update to DSM 7.1.1-42962 Update 8 introduced changes that affected the operation of the mimedefang-multiplexor process, causing it to fail to retrieve the domain ID for the specified domain.

Resolution

At this time, there is no official resolution for this issue. However, some users have reported success by manually specifying the domain ID in the mimedefang.conf file. To do this, follow these steps:

1. Connect to your Synology MailPlus Server using an SSH client.
2. Navigate to the /usr/local/etc/mimedefang directory.
3. Open the mimedefang.conf file in a text editor.
4. Locate the line that specifies the domain for which the domain ID is failing to be retrieved. It should look something like this:

define domain("example.com") { ... }

5. Add a new line below this line that specifies the domain ID for the domain. It should look something like this:

$domain_id = "1";

6. Save the mimedefang.conf file and exit the text editor.
7. Restart the mimedefang service.

After following these steps, the mimedefang-multiplexor process should be able to retrieve the domain ID for the specified domain.

References

• Synology MailPlus Server: https://www.synology.com/en-global/dsm/packages/MailPlusServer
• DSM 7.1.1-42962 Update 8 Release Notes: https://www.synology.com/en-global/releaseNote/DSM