How to Create a Keyed Map File

1. Using the editor of your choice, create the input file.

   Entries can look like the following:

   sandy@newdomain.com ssmith@newdomain.com ssmith@olddomain.com error:nouser No such user here @olddomain.com %1@newdomain.com

   In this sample, the first entry redirects mail to a new alias; the second entry creates a message when an incorrect alias is used; and the last entry redirects all incoming mail from olddomain to newdomain.

2. Make the database file.

   # /usr/sbin/makemap -o dbm newmap < newmap

   -o	Append to instead of overwriting the file. See makemap(1M) for a list of the options available.
   dbm	Selects the dbm database type. Other map types are btree or hash.
   newmap	Is the name of the input file and the first part of the name of the database file. If the dbm database type is selected, then database files are created using a .pag and a .dir suffix. For the other two database types, the file name is followed by .db.