For those interested in privacy respecting android, check out GrapheneOS on Pixel: De-googled android that is strong on security and rips google out of your device... Ive been using it for two years and won't go back. ::: spoiler Title
I aplaud the write up and recognise that the OP has developed a solution that suits their use case.
Personally I started running my own mail around the same time, but host for several family members at the same time.
I went a slightly different route and pay for a mail filtering service for inbound filtering and outbound relay. All up costs me $90USD per year for inbound and $4 a month for outbound
This has solved most blacklist and outbound mail server reputation issues.
I used to run zarafa till they went commercial. I've since migrated to Mailinabox as a platform. Its pretty resilient. (I've just disabled greylisying and spam detection as I've got upstream MX filtering already) I've also recently been through a MiaB major upgrade - it was pretty simple once I actually read the instructions properly!
If you are data roaming with your home phone plan, then it is normal. The local carrier tunnels the traffic back to your service provider in your home country and then it routes to the internet from there.
I get it all the time when I'm OS travelling.
You'd need a VPN in the country you're in to make the traffic appear local..
If it's happening on WiFi, it will be your language setting. If you're on android, try setting up a different user profile with different language and locations settings as a quick test.
I typically model for 0.5mm tolerance between firm fit parts.
Before you can bank on this, you need to see how tight your tolerances are on the printer. I used the Maker's Muse tolerance test device to figure out what my printer could achieve.
I get concerned when companies like Apple uses the "We won't break our application for demands of one country" argument as Australia, France, the USA and possibly other countries are either planning or already have similar legislation.
The right argument to have is the one that says "this is just plain wrong!". That is a much tougher needle to thread though.
For those interested in privacy respecting android, check out GrapheneOS on Pixel: De-googled android that is strong on security and rips google out of your device... Ive been using it for two years and won't go back. ::: spoiler Title
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