Keeping your chats secure is a good idea, but end-to-end encryption is just the beginning of the list of options to consider when picking a messaging app.
China will definitely block xmpp on any port. I know this because I have tested this very specifically from my own server. It lasted about a day and a dozen messages before it was blocked, and the box got absolutely slammed with vulnerability scans.
China will definitely block xmpp on any port. I know this because I have tested this very specifically from my own server. It lasted about a day and a dozen messages before it was blocked, and the box got absolutely slammed with vulnerability scans.
This is odd because I know a few mainland Chinese people that use XMPP without problems (and afaik without a VPN).
Sounds like your server got blocked for another reason?