Selfhosted
A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.
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As is your want to do. I've run thousands of different combinations and type of SMTP related services at all stages of processing, and I've seen the above 100% of the time.
You are talking about receiving mail from another forwarded entity. It's not the same thing. You're also proving my point, because you're already getting your intake handled upstream, so there you go. What I said is accurate. 👍
I won’t quote the bit of your post again, but no, if you have an open smtp port then you won’t get constantly attacked. Again, I have a fully qualified smtp server and it receives about 40 connections per hour (mostly the spam ones). That's trivial to process.
It doesn’t matter that I forward emails from another server, because, in the end, mine is still public on the internet.
If you are trying to make a point that it's tricky to run a corporate-scale smtp and make sure that end users are protected, then it's clearly not what the OP was looking for.
Super cool story though.
True.
True
I don’t think "cuz security" is a proper argument or no one would be ever listening on public internet. Are there risks? Yes.
Bullshit. You do not need a dedicated host for smtp ingress. It won’t be attacked that much.
That's not part of the mail pipeline the OP asked for.
Here, I brought receipts. There are two spikes of attempted connections in the last month, but it's all negligible traffic.
Self-hosting mail servers is tricky, same as self-hosting ssh, http, or whatever else. But it's totally doable even on an aging RPi. No, you don’t need to train expensive spam detection because it's enough to have very strict rules on where you get mail from and drop 99% of the traffic because it will be compliant. No, you don’t need to run crowdstrike for a server that accepts bytes and stores them for another server (IMAP) to offer them to you. You don’t even need an antivirus, it's not part of mail hosting, really.
Instead of bickering and posturing, you could have spent your time better educating OP on the best practices, e.g. like this.