Projects / tpop3d


tpop3d is yet another POP3 server. It is intended to be fast, extensible, and secure. It is especially extensible in regard to its authentication subsystem. Supported authentication mechanisms include auth-pam (Pluggable Authentication Modules) and auth-passwd to mediate access between users and their Unix-style mailboxes, auth-mysql which uses vmail-sql to mediate access to virtual-domain email, auth-ldap which allows authentication of users against an LDAP directory, auth-other which allows you to authenticate with an external program communicating via pipes, and auth-perl which allows you to authenticate users with custom Perl code. There is integrated support for POP-before-SMTP relaying. tpop3d supports traditional (BSD-format) mailspools and the maildir format of qmail.

Operating Systems

Recent releases

  •  12 Jul 2008 19:03

    Release Notes: Memory handling of a listening/connected sockets array was fixed.

    •  02 Apr 2008 20:34

      Release Notes: This release fixes a couple of memory leaks. It adds recursion into subfolders of a maildir mailbox, and adds support for SHA1 passwords. By default, changes are committed on close-after-QUIT. Support has been added for intelligent filenames in maildirs. A new authenticator auth_gdbm added has been added. Support has been added for qmail-pop3d style UIDLs. Support has been added for syslog-like log levels. The use of select(2) has been replaced with poll(2). maildir-ignore-folders may now contain regular expressions.

      •  25 Nov 2003 03:39

        Release Notes: A couple of errors in the man page and configuration directives which got lost were fixed. The default value for max-children was increased from 16 to 100. A typo in was fixed. A patch to allow substitution variables to be used in LDAP base configurations was incorporated. The apop-only option was altered to affect unsecured connections only. "Mass virtual hosting" was fixed. Performance under heavy load was improved. An optional cache for authentication results was added. A bug in the TLS implementation which could cause connections to be dropped by the server was fixed.

        •  07 Sep 2003 21:47

          Release Notes: Some omissions in the man page have been fixed. A bug which caused bind(2) to fail on some systems has been fixed. A small error has been corrected in README.bulletins. The log-bad-passwords option has been added. A bug in password handling which prevented passwords in the MySQL format from working has been fixed.

          •  20 Aug 2003 10:39

            Release Notes: This release adds support for TLS/SSL, WHOSON, PostgreSQL-based authentication, "mass virtual hosting", scripting hooks for server bulletins, optional locking of maildirs, bugfixes, and performance enhancements.

            Recent comments

            23 Mar 2001 14:04 toastie

            Nice POP-3 server for multiple domains etc.
            I very easily implemented UNIX-account-less mail

            for multiple domains with this server, MySQL (for

            keeping the accounts info) and Exim (as the MTA).

            I recommend it.


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