just a suggestion …

would it be a big deal to somehow show a message box during/after install, stating that if you have manually config’d your email settings that they need to be changed?

For people like me (techno-geeks!:), it’s not too hard to figure out, but if an average user had it fixed up by his tg friend, they will at least have an idea that something needs to be fixed, instead of calling me in a panic about their email not working (granted they’ll probably do that anyway but …!!)