Hello Stefan, Am 11.02.21 um 10:09 schrieb Stefan Hempel:
> I did not find someone with the same issue who uses a different > operating system. I tried a Windows 10 VM myself and it worked. > Other XMPP Clients also work without issues. > > When connecting to the XMPP server is see the "Connecting: Initializing > encryption" message, however after some time > the connection times out and Thunderbird tries again. I checked in > Wireshark and I see what looks to me like a > normal STARTTLS handshake but after three minutes I get an encryption > alert. Sometimes after hours of trying it does connect and after that > the connection is reliable (until I try to reconnect). I'd suggest you check the behavior with upstream pre built binaries. http://ftp.mozilla.org/pub/thunderbird/releases/78.7.1/linux-x86_64/de/ But I expect the outcome will be the same. And I also think this is more a problem of the configuration of the VPN. If you disagree on this it's appropriate to open a upstream issue about your trouble. Maybe an upstream issue is already existing on this. We don't have any modification regarding network or protocol usage within Thunderbird packaging. -- Regards Carsten
