File creation in the MTA queue area channel options

Several channel options can affect the creation of message files in the MTA queue area.

IMPORTANT NOTE: The various MTA queue directories are reserved for use by Oracle software only. Customers MUST NOT create files in these areas.

See also:
 * addrsperfile Option
 * expandchannel Option
 * expandlimit Option
 * multiple Option
 * single Option
 * single_sys Option
 * subdirs Option
 * nosubdirs Option
 * Functional group list of channel options