We installed a new server with Cpanel / WHM, and most things seem to work fine, except the catch-all mailboxes of the accounts.

In the tweak settings we set the option 'Default catch-all/default address behavior for new accounts.' to 'localuser' when installing WHM, but somehow, the mail sent to fakealias@domain.com seems to bounce all the time. It does this with all the accounts, so I guess it must be a WHM setting?

Anyone knows how to solve this?