The mail server is an old Postfix(2.9.6)/Cyrus(2.4.16) stack.
I access emails from 4 different Thunderbird clients using either VPN or SSH port forwarding which gives up to 8 combinations in total.
When switching I often see:
"Unable to connect to your IMAP server.
You may have exceeded the maximum number of connections to this server.
If so use the Advanced IMAP Server Settings dialog to reduce the number of cached connections."
I have already tried reducing the maximum number of server connections to cache from 5 to 1 across all clients and waited 24 hours before reconnecting but the issue didn't go away.
My question: where do I find an option to slightly increase the limit on server side and what is it called?
I've already looked into cyrus.conf, imapd.conf and few other places but couldn't find any obvious setting.
