this post was submitted on 23 Oct 2023
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Like other said to get blocked for some stuff is either because you used server for email spamming so they choose to block it.
When setting up a email server you must make sure no one else can compromise it and use it for sending out spam mails.
I understand this, other than requesting port 25 be open, I didn't even get around setting up the mailcow.
Well no port should be blocked on default. Not even 25
Hetzner do this as default until you pay your first invoice. You can then request to have it unblocked.
Never had todo that, had dedi server with them before and never needed them to unblock any ports. So I don't think you do need to, unless they changed.
I run a few dedicated mail servers at hetzner, never had this issue, even from the get go.