Ap debug MTA option

Debug MTA options: (integer)
RESTRICTED. The  MTA option enables  internal MTA debugging; it is intended for use by Oracle and is not intended to be used by end sites. Specifically, it enables debugging of the AP routines (low level address parsing routines). Higher settings of  cause more verbose output. The precise debug output can be expected to vary between and during releases.

When enqueuing messages, in order for  values greater than   to take effect, both the   and    channel options must be set on the source channel except for the  L channel where just    or   is sufficient.

See also:
 * Debug MTA options
 * master_debug Option
 * slave_debug Option
 * Local channel
 * Alias and address MTA options