I would recommend something like stalwart, which is just a single binary and works. Gives you a web interface and a zonefile you can just copy paste into your DNS including all correct DMARC DKIM SPF and autodiscovery records.
Setting postfix, dovecot etc. up from scratch can be a bit time consuming and annoying.
Deliverability depends on where it is hosted, many VPC providers IP space is completely blocked in spam filters.
When oxygen was first released during the great oxygenation event, it killed all other life on earth.
If the first game you ever played with a stick was a flight simulator, then down is up.
Its a thing in Thailand. Family elephants.
This is apparently the case in the whole industry and its ridiculous.
Ultrasonic cleaner. Cleans all the stuff that’s hard to get to usually. Also great for glasses.
Mark Wahlberg is a racist that once tried to beat a Vietnamese person to death while shouting “I hate the Vietnamese” and other racist shit in the past.
The programming language Python has a higher abstraction level than the programming language C.
Its not guaranteed. They may keep a copy of the original post around.
You can also hang yourself from an ash tree!
This is mostly nonsense.
Don’t just copy random config from the internet, as annoying as it is, read the docs.
Every person and institution saying that is what enables fascism.
Its probably talking about the UK stratospheric aerosol injection research. Like all conspiracy theories, just enough of a grain of truth.
I mean don’t see why not, but you need complete coverage around it, including underside.
You could also try switching to 5 GHz wifi if your walls allow it.
If you are sure that every household can only change their own data, and not that of anyone else, meaning there is only one “true copy” for every file, then yes, you can just replicate that to the other locations.
I do not consider Authelia secure from an architecture point of view.
That is because there is, by design, no authentication between authelia and the backend. That means that if anyone ever manages to directly access the backend services, they can impersonate anyone, including admin.
I want to write this in a separate post because I see many questionable suggestions:
Your scenario does not allow for a simple rsync / ZFS copy. That is because those only work with 1:many. Meaning one “true” copy that gets replicated a couple of times.
As I understand you have a many:many scenario, where any location can access and upload new data. So if you have two locations that changed the same file that day, what do you do? many:many data storage is a hard problem. Because of this a simple solution unfortunately won’t work. There is a lot of research that has gone into this for hyperscalers such as AWS GCP, Azure etc. They all basically came to the same solution, which is that they use distributed quorum based storage systems with a unified interface. Meaning everyone accesses the “same” interface and under the hood the data gets replicated 3 times. So it turns it back into a 1:many basically, with the advantages of many:many.
The threat model is that all communication is recorded and will be decrypted once the technology becomes available. The question then becomes for how long you want your data to be secure. If its for example 40 years, you need to chose an algorithm today that is still secure in 40 years.