New answers tagged web-application
You don't necessarily need to stop it unless you want SharePoint not to treat it like a WFE. It is that service (Microsoft SharePoint Foundation Web Application service) being enabled on the APP server that is causing SharePoint to propagate your new web application settings to IIS on the APP server though.
I would definitely split the web applications, you do not want all of your web (SP) traffic being handled by a single application pool. You do not need to worry about multiple applications pool giving you issues. If you created the web application for the MySites and expect a lot of growth, you should add multiple content databases to the web application. ...
As far as I can recall, email is sent with links from the Default zone. Check your different zones to ensure the settings all line up. Hope this helps.
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