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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Why not just put everything behind a VPN and stop worrying?
How does this help with something like a mail server for a small org? Honest question.
It doesn't.
It doesn't, but I wouldn't recommend selfhosting email for a small org. The low price of Office 365 or whatever Google is calling their business product now is far cheaper than the anguish of running your own server and dealing with spam, both incoming and making sure there's none outgoing, and making sure your recipient servers aren't considering your spam.
Our small mail server is doing OK. Incoming spam is an issue but not a massive problem. Outgoing spam doesn't exist. Once a year the IP ends up on the Microsoft blocklist but using the deliverability form to submit mitigation requests is easy enough and takes half a day or so to sort out.
I'm looking forward to seeing what the Thunderbird team does with Stalwart.
That reminds me I've been meaning to spin up a server, install Stalwart and test it out.
If you're running an email server for more than a handful of persistent users, I'd probably agree. However, there are self-host solutions that do a decent job of being 'all-in-one' (MailU, Mailcow, Docker-Mailserver) that can help perform a lot of input filtering.
If your small org just needs automation emails (summaries, password resets), it's definitely feasible to do actually, as long as you have port 25 available in addition to 465, 587 and you can assign PTR records on reverse DNS. Optionally you should use a common TLD for your domain as it will be less likely to be flagged via SpamAssassin. MXToolbox and Mail-Tester together offer free services to help test the reliability of your email functionality.
VPNs are not a panacea by any stretch of the imagination. they are good for certain use cases but from OP's description they would do next to nothing
It would protect all the services. Instead of having to secure each one, you only expose the VPN server and connect to that. You don't have to worry about North Korean hackers breaching your services if they're not exposed at all, only the single VPN service. Less attack surface, less worry.
And basically useless if you need external users to be able to connect to the services.
This is a scenario where a single node VPN would reduce, not increase OP's security stance. You do have to worry about NK hackers breaching your services because they're all exposed through the single node VPN server. Same attack surface, less knowledge needed to hit the target with the payload.