SMTP nonsecure gateway configuration defaults

If SMTP is not configured as a secure gateway, SMTP uses the following defaults:

FIELD DEFINITION SECTION
DEFAULTFIELDS = 'BCC' 'CC' 'FROM' 'REPLY-TO' 'RESENT-FROM'
                'RESENT-REPLY-TO' 'RESENT-SENDER' 'RETURN-PATH'
                'SENDER' 'TO';

RULE DEFINITION SECTION

A '@' NJEHOSTNAME => A '@' TCPHOSTNAME;

IF NJEDOMAIN = '' THEN
   A '@' ANYNJEHOSTNAME => A '%' ANYNJEHOSTNAME '@' TCPHOSTNAME;
ELSE
   A '@' NJEHOSTNAME '.' NJEDOMAIN    => A '@' TCPHOSTNAME;
   A '@' NJEHOSTNAME '.' ALTNJEDOMAIN => A '@' TCPHOSTNAME;
   IF NJEDOMAIN CONTAINS '.' THEN
      A '@' ANYNJEHOSTNAME                  =>
         A '@' ANYNJEHOSTNAME '.' NJEDOMAIN;
      A '@' ANYNJEHOSTNAME '.' NJEDOMAIN    =>
         A '@' ANYNJEHOSTNAME '.' NJEDOMAIN;
      A '@' ANYNJEHOSTNAME '.' ALTNJEDOMAIN =>
         A '@' ANYNJEHOSTNAME '.' NJEDOMAIN;
    ELSE
       A '@' ANYNJEHOSTNAME                  =>
          A '%' ANYNJEHOSTNAME '.' NJEDOMAIN '@' TCPHOSTNAME;
       A '@' ANYNJEHOSTNAME '.' NJEDOMAIN    =>
          A '%' ANYNJEHOSTNAME '.' NJEDOMAIN '@' TCPHOSTNAME;
       A '@' ANYNJEHOSTNAME '.' ALTNJEDOMAIN =>
          A '%' ANYNJEHOSTNAME '.' NJEDOMAIN '@' TCPHOSTNAME;
    ENDIF
 ENDIF

A '@' TCPHOSTNAME       => A '@' TCPHOSTNAME;
A '@' SHORTTCPHOSTNAME  => A '@' TCPHOSTNAME;
A '@' ALTTCPHOSTNAME    => A '@' TCPHOSTNAME;
A '@' ANYDOMAINNAME     => A '@' ANYDOMAINNAME;
A '@' B                 => A '@' B '.' TCPHOSTNAMEDOMAIN;