Sharepoint 2013 Incoming Email Mails were stucked on SMTP Drop Folder

SharePoint Incoming Email Service Not Pickup the Mails from Drop folder

I have upgraded the Windows SharePoint Service 3.0(Standalone) which had incoming Email Service to SharePoint 2013 Server (Multi-farm Environment).

The upgrade was successfully completed and I configured the Incoming Email service based on the Microsoft Article but the mails were not picked from SMTP Drop folder to SharePoint.

I reconfigured many times but it was not solved. Finally I have followed the below article which resolved the issue and all the mails were picked from SMTP drop folder to SharePoint

https://netorg147440-public.sharepoint.com/Lists/Posts/Post.aspx?ID=3