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How to open port 25 for free instances

hyqDec 1 2023

My instance now only has two ports open, 22 and 111. Because I want to use it as a mail server, I need to open ports 25, 110, 995, 143, 993, 465, 587, 31535, and 80. How can I do this? Just did it? Thanks!

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Added on Dec 1 2023
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