Very long connecting time on first launch
I'm on Thunderbird (128.6.0esr (64-bit)) on Fedora/GNOME. I've noticed, that whenever I launch Thunderbird, it takes several minutes (!) where it says "Connecting to mail.myserver.com" in status. I'm using my own postfix/dovecot server with imap and I don't have this problem on Thunderbird Windows for instance, where it connects right away on startup. After the initial slow connection, it works just fine, when I manually trigger to scan for new messages (instantly). I tried literally any option within Thunderbird to fix that, without any success. It seems to be some trouble with resolving / dns or probably ip6/ip4, but then again, why would it work normally after the long connection time in the beginning? Any clue what might be the problem here?
Ọ̀nà àbáyọ tí a yàn
The Problem was caused by Fedoras network configuration. I had to disable IPv6 (rathermore the automatic DNS lookup). You can do that in Fedoras GUI config in the Network section or edit
sudo nano /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1
and apply the changes:
sudo sysctl -p
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Ọ̀nà àbáyọ Tí a Yàn
The Problem was caused by Fedoras network configuration. I had to disable IPv6 (rathermore the automatic DNS lookup). You can do that in Fedoras GUI config in the Network section or edit
sudo nano /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1
and apply the changes:
sudo sysctl -p
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