How to quote the special wildcard characters '*' and '?'

Hello,

I am searching for a way to execute doveadm command against mailbox containing a special wildcard character in its name. For example:

# doveadm expunge -u 'me?@example.com' mailbox 'INBOX.Junk Mail' SAVEDBEFORE 7

The result is: doveadm(root): Error: User listing returned failure doveadm: Error: Failed to iterate through some users

with exit code 75

In the mail log: dovecot: auth: Error: Trying to iterate users, but userdbs don't support it

To be clear: the question mark is a part of the mailbox's name. Not an attempt to use it as wildcard.

Is there a way

1. To quote the special characters or
2. To disable wildcard matcing in the -u parameter

regards,

-- David Davidov | System Administrator | ICDSoft Ltd.