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Dovecot with MBOX, IMAP and subfolders, or “Target mailbox doesn’t allow inferior mailboxes”

The MBOX format limits your clients to creating subfolders that can either store folders, or emails, not both. When creating a folder, you differentiate between a folder for storing folders or for storing emails by adding or leaving out a forward slash at the end of the folder name: A folder name like ‘withsubfolders/’ will […]

Increase dovecot 1.2 file descriptors and max login processes

1. edit /etc/dovecot.conf

#login_max_processes_count = 128 login_max_processes_count = 512

2. edit /etc/security/limits.conf

* soft nofile 8096 * hard nofile 8096

>ulimit -n to check the fd limit

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