Currently i have configured Nginx to use auth_basic for accessing some directory's. I use "auth_basic_user_file /path/to/.htpasswd", so store the user credentials. Since all the Credentials in this file are the same as a external IMAP Server has, and i must change them, if i change my IMAP Credentials, i wonder, if it is possible to use the IMAP Server as Authentication Backend directly? Do i have a Chance? Most important hing is, that i could use still HTTP Basic Auth for my Applications in the desired directory's.