Description

   Hold or delete message files containing specific substrings
   in their envelope From: address, Subject: line, or content.
   By default, message files are held (/HOLD). Specify /DELETE to
   instead delete matching message files. The /CONTENT, /ENV_FROM,
   and /SUBJECT qualifiers are used to specify the substrings for
   which to search.

   Any combination of /CONTENT, /ENV_FROM, and /SUBJECT may be
   specified. However, only one of each may be used. The /MATCH
   qualifier controls whether a message file must contain all
   (/MATCH=AND, the default) or only one of (/MATCH=OR) the
   specified substrings in order to be held or deleted. The default
   is /MATCH=AND.

   By default, each substring to be searched for must be at least
   24 bytes long (/MIN_LENGTH=24). This is a safety measure: the
   longer the substring, the less likely the chance of false "hits".
   Use the /MIN_LENGTH qualifier to override this limit. Also
   by default, only message files identified by the queue cache
   database are searched (/DATABASE). Use the /DIRECTORY_TREE
   qualifier to instead search all message files actually present
   in the channel queue directory tree.

   The optional channel parameter restricts the search to message
   files in the specified channel. The channel parameter may use *
   and ? wild cards.

   The /THREADS qualifier may be used to accelerate searching on
   multiprocessor systems by dividing the work amongst multiple,
   simultaneously running threads. To run n simultaneous searchingg
   threads, specify /THREADS=n. The value n must be in the range
   1-8. The default is /NOTHREADS.