I have been getting this error since I rebuilt my server.
I am using courier-imap and vmailmgr (with the courier-imap auth
module). The error happens in Netscape for Win, Netscape for Linux,
Mozilla M16, and IE5.
The error does not happen right away. It happens when I have th client
open for a little while and new mail appears in the imap server. The
next time I "Get Msg" I recieve this error. So in my simple deduction,
is appears that when new mail appears in the new folder, courier-imap is
not reporting this in a way that my imap clients like.
The other problem I notice is that when I reload the courier-imap
service, I get an odd error.
# /etc/rc.d/init.d/courier-imap stop
Stopping Courier-IMAP server: imaplogin
# /etc/rc.d/init.d/courier-imap start
Starting Courier-IMAP server: imaplogin
# bind: Address already in use
When this happens I cannot start courier-imap without rebooting the
entire server.
I cannot find anything in the IMAP logs. This makes sense because it
seems that the client doesnt like what the server is saying. The
resolution is to completely restart the mail client.
Any ideas?