Thunderbird, IMAP and ‘server xxxxxxxx has disconnected. The server may have gone down or there may be a network problem.’

If you’ve seen this, you might be mislead into thinking that the remote end
is at fault (the IMAP server) or that you really have connectivity issues.
Before you curse your admin or your ISP, take another option into consideration:
if the server has a smallish number of connections per user (in my case it’s
true, I am the admin🙂, this might be the cause. So, one goes to Edit ->
Account settings -> $account -> Server settings -> Advanced ->
Maximum number of server connections to cache. In my case, 2 worked just fine.
You are welcome to start from 2 and perhaps up the value until you start
seeing the error again.

3 thoughts on “Thunderbird, IMAP and ‘server xxxxxxxx has disconnected. The server may have gone down or there may be a network problem.’

  1. Thanks. It worked.

  2. This WORKED !!!! Thanks

  3. I think that may have fixed my problem as well. Thank you!

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