Just inherited this issue that was left from previous developer so i have NO knowledge of how the process is working. Actually, user sends email to an email account and then the document gets pushed into a document library. How did he (the developer) configured this so I can find out why is not pushing data into the document library anymore?
Edited: I found some link and I think it's a good start but I would still be interested to learn why the email is not pushing to the library anymore.
Actually, everything was configured properly. I think I had to go into central admin and re-submit my "incomming mail config" (without even changing anything on this screen). That did it. I guess it reforces the timer job to start this process. After this step, I went to Document library and made sure everything is configured propertly (everything was find and made no change) and I click OK (instead of cancel, even though everything looked good).
Now it's working. I guess some magic