input-database-spec

Database from which to read entries. By default, the MTA looks for a current format database of the given name; if this does not exist, the MTA will look for an old format database of the given name. The special keywords IMTA_ALIAS_DATABASE, IMTA_REVERSE_DATABASE, and IMTA_GENERAL_DATABASE are supported; the use of such a special keyword tells the MTA to dump the database specified by the corresponding MTA tailor file option.

output-file-spec

ASCII file to which the entries stored in the database are written. This file should be in a directory where you have write permissions. If an output file is not specified, the output is written to stdout.