Most configuration options for the three servers that make up DMail are held in the DMail configuration file, which is dmail.conf by default. The initial settings in the configuration file are normally placed there by the DMSetup wizard. You may modify them at any time to fine tune DMail or to allow for changes to your system. The configuration file generated by the DMSetup wizard contains extensive comments and can be edited using a standard text editor. Most settings in dmail.conf are specifed one per line and have the format, name value where 'name' is the setting name and 'value' is the setting value, commonly a single word or number.
Some settings take multiple word values.
Nothing else should appear on the same line either before or after the setting. Occasionally a setting can be specifed with a list of values separated by commas. The reference section lists all available settings with their individual syntaxes. See also, Notes on the dmail.conf file. Multiple value settings should be entered as multiple lines in dmail.conf.