Comcast Closes Port 25

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Well, I'm glad I don't use Comcast for my email, but it is incredibly irritating to have my mom constantly ask me for help or ask me what is wrong with it or ask me why that's wrong with it, or whatever. In short, Comcast has closed a port (port 25) and there are many different theories as to why they did it. They said it was for less spam and all that, but read on and believe what you will.