[Dovecot] How to change dovecot's bounce message

Hi,

I am using the quota plugin of dovecot. Dovecot is running as LDA for postfix.

When the system is running into the quota limit, the bounce message reads as follows:

Your message was automatically rejected by Dovecot Mail Delivery Agent.

The following reason was given: Quota exceeded

Can I somehow change this message, to make it more userfriendly? Postfix has a possibilty to change the bounce_template_file.

Best regards,

Markus