I have followed the instruction given on the below link to configure dropbox I am using 2.9.1 version http://wiki.x2engine.com/wiki/E-Mail_Configuration#Configuring_the_.22Email_Dropbox.22_For_Receiving_Emails after configuring, When i send email to dropbox@dnlabsindia.com i get following error in my bounced email: Any help to fix this problem is a welcome. If dropbox is not supported in community edition, the can i download from yii framework and install it. If any one has fixed it share their experience with me Error i get: _______________________________________________________