Recently I had the oppurtunity to deploy hMail Server. I need a WebMail server to serve my hMail server email accounts.
On installing AfterLogic WebMail Pro (ASP.NET)on my home network, as part of the installation I needed to connect to my SQL DB, I supplied the credentials and got this error. Error 18456.
On further search on the net, i found this resource.
In this case the error included "State 6" . I then created an SQL account and provided same.