Max local received lines MTA option

Received header line MTA options:  (integer)
As the MTA processes a message, it scans any Received: header lines attached to the message looking for references to the official local host name. (Any Received: line that the MTA inserts will contain this name). If the number of Received: lines containing this name exceeds the  value, the message is entered into the MTA destination channel queue area in a held state. This check blocks certain kinds of message forwarding loops. The message must be manually moved from the held state for processing to continue. The default for  is 10.

See also:
 * Received header line MTA options
 * held_sndopr MTA Option