Only 5 domains are looked at until Thunderbird stalls...why?
I have a Postfix/Dovecot server that hosts 10 of my domains from one IP.
When you open Thunderbird, it checks the domains you have preset. I have two. This happens immediately, especially if there is no new mail on the server. Everything works fine.
If you have other domain mailboxes open, and I have eight more, and you click the inbox on each one, Thunderbird stalls at the fifth mailbox, regardless of the inboxes' selected order.
tail -f /var/log/mail.log - confirms this.
I have reset or modified everything I can think of. My server is not throttling Dovecot.
This must be something internal to Thunderbird, possibly related to only using a specific mail server IP for all domains.
Google AI suggests assigning a unique local IP alias to each domain on my server so Thunderbird thinks it’s talking to 10 different machines. This seems extreme.
Any solutions?
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No response from the developers?