Error: Admin credentials are not verified when creating a project using admin credentials. This error appears in a red box in the corner of the projects page.
Apart from one occurrence so far this error relates to an incorrect mailbox server URL, admin id or admin password.
If you have cut and pasted the details in to the fields try entering them manually instead. Our most common error is non visible characters or spaces entered in to the fields and manually entering the fields solves this.
Also look out for commas instead of dots within domain names.
If you are sure the details are correct try creating the project without admin credentials, adding a mailbox to the projects and then go back to edit the project and re-add the admin credentials. We have seen this on one occasion were this has resolved the issue and the credentials are then accepted.