I assume you are using the Service Desk feature in GitLab? Can you share more details how it is configured, and how incoming mails result in duplicates. Also, which version of GitLab is involved. Thanks!
The issue still exists. We cleaned up the message queue, but if we restart service center, it creates multiple tickets and multiple emails to customers.
Suggestions for solutions are welcome, including suggestions for professional services.
can you please try to use the Service Desk address that’s generated from the incoming_email address? You can find it in the general settings of your project. Expand the “Service Desk” section and find “Emails sent to email address are also supported”.
Does an email to this address also create two tickets?
When you reply to the thank_you email after ticket creation, does that add a comment on the ticket?
Do you receive any Service Desk emails twice?
service_desk_email is basically an additional alias email for Service Desk and all features are also available using the incoming_email. I want to investigate whether there’s something wrong with service_desk_email.
Another thought: Did you set up any email forwarding for incoming_email or service_desk_email?