On 09/03/2021 20:37, Bev Nicolson wrote:
[Jumping in at (I think) one of the most recent posts, but not directly following on from...]
Other thoughts. [AKA Grasping at straws]
Could there be some sort of attempt to start a connection, which is timing out then switching to a different one?
I was thinking that perhaps Thunderbird is trying to initiate a login with a (sign-in) protocol that is not supported or correctly configured. After a while, it'll give up, then swap to a lesser one that actually works.
In the past, I feel that my system tried to do things using IPV6. It would wait a while, then give up because I'm not using IPV6. Once I disabled IPV6 on a few key machines, things seemed to speed up. This was a while ago though and is probably not relevant.
Waiting for removed/corrupted folders. Here's a thought. In thunderbird, at the top of the folder hierarchy, there's a mailbox name which has a "v" by it, or ">" if the mailbox folders are collapsed to one line.
If you right-click on this mailbox name, you get a pop-up menu. One of the options is "Subscribe". This shows a list of the folders that exist on the remote server, and that should appear beneath your mailbox name. I suggest doing "Refresh" to make sure the list is up-to-date. Check for any folders you don't expect to see. Then perhaps try unsubscribing from all but one. Then add them back in a few at a time, and see if there is a folder that slows things down. If there is, right-click on the folder (under the mailbox, not in the subscribe dialog box). Click on "Repair". Once that's done, right-click then "Compact". See if that makes a difference!
Re the "Too many connections" suggestion, it is possible to control the number of IMap connections thunderbird has with a server. This article shows how in windows, but it is basically the same. The default no of connections is 5 though - that should be OK?
Anyway, that's some more things to try perhaps.
Good luck
Steve