Thunderbird and "Login to server failed".

[Simon Matter]

> Hi,
>
> I'm using cyrus-imapd (now 2.4.x) and Thunderbird. The problem is, when
> I click fast on the e-mails, I often get the "Login to server foo.bar
> failed" (when I click like one -email per 3 seconds everything is fine).
> My password is okay, so I just press "Cancel". I live with this problem
> for a really long time, and I can say the this is specific to the TB: it
> doesn't happen in Outlook. I've read a lot about this, and, besides the
> mailbox being improperly configured and failing authrization 100% of the
> time (which is not my case), there's an urban legend that TB uses by
> default  5 concurrent connections to the IMAP server (and this part is
> true), while cyrus permits less. But the thing is, even with 1 connecton
> configured in TB (in advanced settings), I still get this error when
> clicking messages fast. No errors are logged on the cyrus side, just the
> normal log stating that I was allowed to examine my mailbox.
>
> Is there any way to get rid of these boring messages ?
>
> Cyrus ML may not be the correct place to ask for this, but BT/Mozilla
> community just gives me futile answers like "are you sure you type your
> passwords right" and so on.

Interesting, I've never seen this problem over the years.

Are there firewall rules active on the cyrus-imapd host? Probably limiting
connection rate?

Regards,
Simon