Linux Harbour

In traditional Linux email server, mbox-format files are used for each user mailboxes, which all incoming emails (eg. in inbox) are stored in 1 files. It is not efficiency to seek for one requested email in a huge mailbox file with many emails, and default size limitation (4GB by default, but it can be changed) of a single file on Linux system.

Starting from 2002, we uses Maildir-format files for email mailboxes on our and our client's Linux email systems. Maildir-format is a file folder/directory for each email mailbox folders (eg. inbox), and each emails are stored in individual files in the same file directory.