TRACE LEVEL

TCP/IP-channel-specific options: TRACE_LEVEL (0, 1, or 2)
This TCP/IP channel SMTP server and SMTP client option, and LMTP server and LMTP client option, controls whether TCP/IP level trace is included  in debug log files. The default value is 0, meaning that no TCP/IP packet traces are included; a value of 1 tells the MTA to include  TCP/IP packet traces in any debug log files; a value of 2 tells the MTA  to include some additional information, such as DNS lookup information,  in addition to the basic TCP/IP packet traces.

See also the  flag of the   mapping table, which can be used to selectively enable   only for particular incoming SMTP/SMTP SUBMIT/LMTP connections.

See also:
 * master_debug Option
 * slave_debug Option
 * PORT_ACCESS mapping table
 * TCPIP-channel-specific options