Like any other piece of software (and information generally), qmail comes with NO WARRANTY. Configuration: The qmail home directory is /var/qmail. (This must be a local directory, not shared among machines. Under Linux, make sure that all mail-handling filesystems are mounted with synchronous metadata.) The user-ext delimiter is -. The silent concurrency limit is 120. The queue subdirectory split is 23. To install: # make setup To set up qmail to receive and deliver mail, follow the instructions in /var/qmail/doc/fastforward/ALIASES, and then start at step 9 of /var/qmail/doc/INSTALL. Compilation environment: Oops, the package creator forgot to edit this! He's supposed to list his OS version, compiler version, hardware, and name.