Vpopmail

Vpopmail is an open-source GPL software package used for managing virtual e-mail domains and non-password e-mail accounts on e-mail servers. It was originally developed by Inter7.[1]

Features
  • Support for 1 to 23 million virtual e-mail domains using a "grow as it goes" balanced directory tree.
  • Support for 1 to 23 million e-mail users per domain using the same balanced tree structure.
  • Automating e-mail configurations into command line programs that can be used for scripts and documented API library calls.
  • Automating Unix user/group/other permissions of directories and files.
  • Authenticated relay control of e-mail SMTP servers.
  • Supports name or IP-based virtual domains
  • Configurable logging.
  • Support for MySQL, Oracle, PostgreSQL, /etc/passwd, /etc/shadow, LDAP, Sybase, and default CDB authentication storage.
  • Delivers directly to Maildir for use with qmail-pop3d, .qmail files or any other Maildir program
  • Unique domains for each directory under vpopmail user with a Unique password files for each domain.
  • Documented command line programs that can be used in scripts or for remote admin.
  • Documented C library for vpopmail features and transactions.
  • Daemon that manages mail accounts via TCP/IP control port.

Operating system requirements

The minimum operating system requirement for vpopmail is

References
  1. Levine, John (2004). qmail: Managing Unix-Based Mail Systems. O'Reilly Media. p. 147. ISBN 9781565926288.


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