Stupid rspamd default config on my server blocked an email confirming an order from rayban I guess because it was the first time it saw an email from them? Couldn’t even release it, which annoyed me greatly.
And it also put a confirmation from a hotel into quarantine because the resort didn’t have a valid spf record. But at least I could release that one.
I ended up making it much more permissive as a result. But it was super annoying.
On her computer, why not just use Thunderbird on it? Or even outlook, or whatever she likes. She just needs to pick the software.
On her phone, or even yours, why the stuff with accessing Thunderbird through vnc. Just add the server to whatever mail app on your phones?
If you want a web based thing, roundcube or sogo. But Thunderbird is gonna suck the way you are trying to use it.