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<B>Digital的Unix操作系统VAX 4.2源码</B>

   MH-GEN(8)                                                               MH


               database (such as with Yellow Pages) instead of doing a
               sequential read of /etc/passwd.  Without DBM the entire passwd
               file is read into memory one entry at a time for alias expan-
               sion.  This is a performance improvement when reading a stan-
               dard /etc/passwd file, but is _v_e_r_y slow on systems with a dbm
               database.  At one site that runs YP on a large passwd file, it
               showed a 6:1 performance improvement.

          DPOP
               Enables the POP database, useful only if POP service is
               enabled.

          DUMB
               Directs _M_H not to try and rewrite addresses to their "offi-
               cial" form.

          FOLDPROT
               Defines the octal value for default folder-protection.  For
               example, FOLDPROT='"0700"'.  The default is "0711".

          ISI
               When using "repl -ccme", only "cc:" the first address found
               which belongs to the user; any other _A_l_t_e_r_n_a_t_e-_M_a_i_l_b_o_x_e_s do
               not receive "cc:"s.

          LINK
               Defines the filename for alternate file name for _d_i_s_t and
               _r_e_p_l.  For example, LINK='"\\043"' to use the pound-sign char-
               acter.  The default is "@".

          locname
               Hard-wires the local name for the host _M_H is running on.  For
               example, locname='"PICKLE"'.  It's probably better to either
               let UNIX tell _M_H this information, or to put the information
               in the host specific mtstailor file.

          MHE
               Enables crude support for Brien Reid's MHE interface.  Recom-
               mended for use with the GNU Emacs mh-e package.

          MHRC
               Enables _M_H to recognize the _C_S_h_e_l_l's `~'-construct.  This is
               useful for sites that run with a ~/.mhrc for their users.

          MORE
               Defines  the location of the _m_o_r_e (1) program.  For example,
               on ALTOS and DUAL systems, MORE='"/usr/bin/more"'.  The
               default is "/usr/ucb/more".

          MSGPROT
               Defines the octal value for default folder-protection For
               example, MSGPROT='"0600"'.  The default is "0644".

          NDIR


   6                                                                   [mh.6]






   MH                                                               MH-GEN(8)


               For non-Berkeley UNIX systems, this _M_H will try to find the
               new directory access mechanism by looking in <ndir.h> if this
               option is given.  Otherwise, _M_H will try <ndir.h>.  If you
               still can't get this to work on your system, edit h/local.h as
               appropriate.

          NFS
               Tells _M_H to hack around a problem in the NFS C library.  If
               you get an undefined symbol "ruserpass" when compiling _M_H, you
               need this option.

          NOIOCTLH
               Tells _M_H not to include the file <sys/ioctl.h>.  To be used on
               systems where this file is not present.

          NOMHSEQ
               Directs _M_H to make private sequences the default.

          NTOHLSWAP
               Tells _M_H to use the ntohl() macro when processing _m_s_h binary
               map files.  _M_H can use this macro on systems with the include
               file netinet/in.h, to byte-swap the binary information in
               these map files.  If you're using the same map files on
               machines of different architectures, enable this option.

          OVERHEAD
               Enable _M_H commands to read profile/context from open fd:s
               without doing an open(); see mh-profile(5) for the details.

          POP2
               Have the POP daemon understand the older POP2 protocol as well
               as the _M_H POP3 protocol - a major win.  The POP daemon auto-
               magically determines which POP protocol your client is using.
               If you're enabling POP service, there's no reason not to
               enable this option as well.  See also _P_O_P_S_E_R_V_I_C_E.

          POPSERVICE
               The port name the _M_H POP will use.  For historical reasons,
               this defaults to "pop".  In 1987, the _M_H POP protocol (POP
               version 3) was published as RFC1081 and was assigned its own
               port number (110), which differs from the original POP (ver-
               sion 1 and 2) port number (109).  To have _M_H POP use the new
               assigned port number, set POPSERVICE='"pop3"', and be sure
               that this service name is listed in your /etc/services file on
               both POP client and server hosts as "110/tcp".  If you enable
               _P_O_P_2, you can safely leave this undefined unless you are using
               POP3 clients besides _M_H.

          RPATHS
               Directs _i_n_c to note UNIX "From " lines as Return-Path: info.

          RPOP
               Enables the RPOP variant of POP, useful only if POP service is
               enabled.


   [mh.6]                                                                   7






   MH-GEN(8)                                                               MH


          SBACKUP
               Defines the prefix string for backup file names.  For example,
               SBACKUP='"\\043"'.  The default is ",".

          SENDMAILBUG
               Causes SMTP reply code 451 (failure) to be considered the same
               as code 250 (OK).  Enable this if you know that your SendMail
               will return this code even when it doesn't mean to indicate a
               failure.

          SHADOW
               Indicates that the encrypted passwords can be found in the
               /etc/shadow file (and not in the /etc/passwd file).  This
               option should only be used for some (newer) SYSTEM 5 systems.

          SOCKETS
               Indicates the availability of a socket interface for TCP/IP
               networking that is compatible with 4.{2,3}BSD UNIX.  It is not
               necessary to define this when BSD42 is already defined, but it
               might be useful for SYSTEM 5 or HPUX systems with TCP/IP sock-
               ets.

          SUN40
               Use on Sun OS 4.0 (and later?) systems.  You probably also
               want "options BSD42", "options BSD43", and "options
               TYPESIG=void".

          SYS5
               Use on AT&T SYSTEM 5 R3 (and newer?) UNIX systems.  See also
               _m_a_i_l_g_r_o_u_p.

          SYS5DIR
               Define this if your system uses "struct dirent" instead of
               "struct direct".  This is true of System V Release 3.0 and
               later.  Uses include file <dirent.h> and the routines _m_k_d_i_r,
               _r_m_d_i_r and _g_e_t_c_w_d.

          TTYD
               Support for TTYD.  This is no longer in wide use, and is not
               recommended.

          TYPESIG
               Defines the base type (int or void) of the functions being
               parameter/return value of _s_i_g_n_a_l (2).  The default is int.
               Set TYPESIG='void' on systems which use this type (e.g., SYS-
               TEM 5 V3.0 and later or Sun OS 4.0).

          TZNAME
               Use time zone names from the _t_z_n_a_m_e variable, set via _t_z_s_e_t.
               Only applicable on SYSTEM 5 systems and only effective when
               you have asked for alpha-timezones (see the ATZ option).  See
               also ZONEINFO.

          UCI


   8                                                                   [mh.6]






   MH                                                               MH-GEN(8)


               First, "_" and "#" are recognized as the prefixes for scratch
               files.  Second, support for the UCI group-leadership mechanism
               is enabled in _c_o_n_f_l_i_c_t.  Third, the file $HOME/.signature is
               considered to contain a single line of text which is used as
               the _F_u_l_l _N_a_m_e part of your "From:" header.  This may conflict
               with the interpretation of this file by _N_e_w_s.  If you're not
               at UCI, you probably don't want this option.

          UK
               Directs the _s_c_a_n program to generate UK-style dates.

          V7
               Use on V7 UNIX systems.  Also, be sure to use "options
               void=int".

          WP
               Enables the White Pages service.  Contact [e-mail]
               for more information.

          WHATNOW
               Enable certain _M_H commands to act differently when $mhdraft
               set.

          ZONEINFO
               Specify this if you have a BSD43 based system that keeps time
               zone information /etc/zoneinfo or /usr/lib/zoneinfo (SunOS).
               With this fix the GMT offset specified in outgoing mail will
               be corrected when the TZ enviornment variable is set to a dif-
               ferent time zone.  See also TZNAME.

     cc:
          The name of your C compiler, if not "cc".

     ccoptions: -O
          Options given directly to _c_c (1).  The most common is "-M" if
          you're running _M_H on an ALTOS.  This defaults to "-O".  If you
          define this and want to keep "-O", be sure to include it expli-
          citly.

     curses: -lcurses -ltermlib
          This should be the loader option required to load the _t_e_r_m_c_a_p (3)
          and _c_u_r_s_e_s (3) libraries on your system.  On SYS5 systems, it prob-
          ably should be just "-lcurses".  Some sites have reported that both
          "-lcurses" and "-ltermlib" are necessary.

     ldoptions:
          Options given directly to _l_d (1) (via _c_c ) at the beginning of the
          command line.  Useful for machines which require arguments to tell
          _l_d to increase the stack space (e.g. the Gould, which uses "-m 8").
          Usually, "-s" is a good choice in any event.

     ldoptlibs:
          Options given directly to _l_d (1) (via _c_c ) at the end of the com-
          mand line.  The two most common are: "-ldbm" if you're running MMDF


   [mh.6]                                                                   9






   MH-GEN(8)                                                               MH


          with the _d_b_m package; and, "-lndir" if you are generating _M_H on a
          system which does not load the new directory access mechanism by
          default (e.g., 4.1BSD, SYS5).  If you don't have _l_i_b_n_d_i_r on your
          system, the sources are in miscellany/libndir/.

     lex: lex -nt
          Alternative version of _l_e_x.  Used in zotnet/tws/.

     sprintf: int
          The return value of the _s_p_r_i_n_t_f library routine.  This defaults to
          "char *".  Set this to "int" if you have an older version of SYSTEM
          5 which has this routine return an "int" type.

     sharedlib: off
          Makes libmh.a into a shared library (only for SunOS 4.0 and later).
          If you enable this, be sure to use "options SUN40".

     slibdir: /usr/local/lib
          The directory where the MH shared library should go.  You'll need
          to manually run _l_d_c_o_n_f_i_g (8) whenever a new shared object is
          installed on the system.

          If you want to put it somewhere other than /usr/lib or
          /usr/local/lib (not advisable), you'll probably have to run _l_d_c_o_n_-
          _f_i_g (8) on that directory, or alter the environment variable
          LD_LIBRARY_PATH for each user wishing to use the MH system (this is
          messy). See _l_d (1) for more information about how to do this.

     oldload: off
          Support for the ALTOS loader if "on".  Support for loaders not han-
          dling `-x -r' correctly if "none".

     ranlib: on
          Support for systems with _r_a_n_l_i_b (1).  For SYSTEM 5 systems, this
          should be "off" which tells _M_H to use _l_o_r_d_e_r and _t_s_o_r_t instead.
          Some SYSTEM 5 sites reported that running this isn't always suffi-
          cient.  If this is the case, then you should edit
          conf/makefiles/uip to include ../sbr/libmh.a and ../zotnet/libzot.a
          twice in the LIBES variable.

     tma: off
          Support for the TTI _t_r_u_s_t_e_d _m_a_i_l _a_g_e_n_t (TMA).  Although the TTI TMA
          is not in the public domain, the _M_H support for the TTI TMA is in
          the public domain.  You should enable this option only if you are
          licensed to run the TMA software (otherwise, you don't have the
          software in your _M_H source tree).

     Now edit conf/config/mtstailor, depending on your choice of the setting
     for mts in the _M_H configuration file.  for an mts setting of "mh", look
     at the file conf/tailor/mhmts; for an mts setting of "sendmail",
     "sendmail/smtp", "mmdf/smtp", or "mmdf2/smtp", look at the file
     conf/tailor/sendmts; and, for an mts setting of "mmdf", or  "mmdf2",
     look at the file conf/tailor/mmdf.



   10                                                                  [mh.6]