We have a JSM Project with a Customer Portal in witch we want the e-mails replied turn into comments on issues
However we noticed that comments are not being added and we are getting errors on e-mail handler logs regarding to lack of permission to add internal comments

The error says "You do not have permission to create internal comments in this issue".
The fact is that we do not want it to be internal, once it must be visible on portal. Furthermore, we have checked and granted almost all permissions to Service Desk Portal Access and it does not work. We also granted the acccess to "Any logged in user" and it didn't work too.
When an agent answer an e-mail, the comment is processed normally.
I'm sharing my configs:

Permissions:

Portal Settings
