Enable more error filtering for idvault scan during authentication

we enable authentication for web services as check in vault first then in directory.

But we have some users without id, for exemple for pop3 login.

so theses users are connecting to their mailbox using pop3 and login with email and password from the directory internet password.

but in console.log and ddm, we found many error showing that the id for this user does not exists.

we can not use only check in directory and we can not filter all the warning error in ddm or console.

So please, find a solution to be able to have more granularity on what can be filter in ddm or console or find a way to enable auth in id vault then directory for everyone but some users (maybe a checkbox in the user form, or the fact that he do not have a certificate ?)

Kind regards.