I haven't worked on configuring email to case before and there are basically two options. (Email to case and On demand email to case)
I found a few links listing the differences in terms of features(email attachment limit, firewall, installing agent etc)
But I was hoping to see some good working guidelines on how we can choose between the two. Overall I felt that the "On demand email to case" seemed to be a better option but I am not sure if there are any gotcha's with implementing it.
I also did not fully understand the distinction between the firewall aspect. From the help: https://help.salesforce.com/HTViewHelpDoc?id=customizesupport_email.htm&language=en_US "This lets you keep all email traffic within your network’s firewall ". What implications does this have on choosing a solution?
There have been some pretty good similar questions that others have benefited from. So thats why I am asking this.