I manage a SP 2010 site for my corporation. I have a workflow setup on a document library which sends out emails to users upon workflow activation. I want to change the email address from which the workflow sends out emails (the "from" field in emails that users receive from the site). The SharePoint Server technical team has stated though that the email address is setup for the entire "WEB application and can't be changed for a site collection." I'm not sure what he means by that but can somebody tell me if its possible to setup email for a site collection and not at a web application level (which apparently would affect all site collections)?
In case it helps, the site URL follows the format:
There are other sites (not managed by me under the "sites" path) which is what I assume the Sharepoint administrator is referring to as being affected if he changes the email for the web application.
Note, the website is not build via custom code so I'm looking for some way to do this (or someway for the SharePoint/Exchange Server technicians) to do this without having to write code, with the exception maybe of a web part I can insert, if that's an option.