this post was submitted on 04 Feb 2026
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I know, many advise against it. But it does not matter, I just want to try, not (yet) host my important e-mails.

So it seems that by default port 25 is blocked by the internet service provider(s?). So I asked my provider to open it, and they answered that as per Trafi rule, port 25 is reserved for the ISP and the ISP only, not to be used by private consumers.

The customer service could only give me this link, which does not explain why this port or the others are blocked. I also lack the technical background to understand this decision.

Can someone explain to me? And are there ways around it without using a VPS? What is/are an association for the defense of digital rights here, that would have content in English?

Thank You!

edit: typo

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[–] alzymologist@sopuli.xyz 1 points 22 hours ago

Hetzner gave me a clean ip with port 25 when I asked nicely. I thought as a lowcoster it would be badly abused, but no, order confirmations from my webshop just went through.

Still email is a silly gatekeeped legacy and is only good for communicated with people stuck with legacy. ActivityPub protocol has all email can do and more, minus gatekeeping.