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mail_manual_setup(7)					  mail_manual_setup(7)

NAME
       mail_manual_setup - Describes how to manually set up and start mail

DESCRIPTION
       Manually	 setting  up and starting your Tru64 UNIX mail system involves
       stopping and starting the  sendmail  utility,  making  changes  to  the
       /var/adm/sendmail/sendmail.cf  and /var/adm/sendmail/hostname.m4 files,
       and running the newaliases command.   The  following  sections  discuss
       these tasks and also provide information about POP and IMAP mail.

       Before  you  configure  mail,  your  machine should be established on a
       local area network (LAN). If you want to use  domain-based  addressing,
       you  must  also configure the Berkeley Internet Name Domain (BIND) ser‐
       vice in your environment.  Furthermore, if you want to distribute  your
       /var/adm/sendmail/aliases   database   (see   aliases(4))  amongst  the
       machines in your environment, you must configure the  Network  Informa‐
       tion  Service  (NIS).  See the Network Administration: Services manual,
       bind_intro(7), nis_intro(7) for more information about the BIND and NIS
       services.

SETTING UP YOUR MAIL SYSTEM
       Setting	up  your mail delivery system requires that you understand how
       the sendmail  utility  works  and  how  to  modify  the	/var/adm/send‐
       mail/sendmail.cf file and the m4 files.

   The sendmail Utility
       The  sendmail  utility  is a general-purpose mail router that enables a
       user to send mail to users on the  same	and  other  systems.  In  most
       cases,  the mail utilities rely on sendmail to parse mail addresses and
       to resolve system aliases. Specifically, when a message	is  sent,  the
       message	goes  through the following delivery process: The mail utility
       passes the message to  the  sendmail  utility.	The  sendmail  utility
       checks  its  aliases  database for full expansion of system names.  The
       sendmail utility parses the address of the receiver of the mail accord‐
       ing  to	a  set of rules. If the message is going to a user on the same
       system as the sender, sendmail passes the message to the	 mail  utility
       for  delivery.  If  the	message is going to a user on a remote system,
       sendmail forwards the message to the sendmail utility (or  the  equiva‐
       lent utility for systems other than Tru64 UNIX) on the remote system by
       using one of the following protocols, as specified in the address: DEC‐
       net

	      Used    to    send    mail    with    DECnet    (for    example,
	      <email>host::user</email>).  uux

	      Used to send mail with the UNIX-to-UNIX Copy Program (UUCP) (for
	      example, decosf!user).  SMTP

	      Used  to send mail with the Transmission Control Protocol/Inter‐
	      net     Protocol	   (TCP/IP)	facility     (for     example,
	      <email>user@decosf.dec.com</email>).   Once  the message arrives
	      on the correct system,  the  sendmail  (or  equivalent)  utility
	      passes  the  message  to	the  mail  utility for delivery to the
	      receiver's mailbox.

   The sendmail Configuration File
       The sendmail configuration file, sendmail.cf, contains the instructions
       for  how	 your  mail  is sent and delivered, and how it is parsed. This
       file includes several tunable macros that you can modify to  suit  your
       environment,  and one macro that you should be aware of but cannot mod‐
       ify. For more information, see the sendmail(8) reference page.

   Using m4 Files
       Alternatively, you can use the mailconfig GUI or	 mailsetup  script  to
       fine tune your mail configuration.  For more information, see the mail‐
       config(8) and the mailsetup(8) reference pages and the Network Adminis‐
       tration: Services manual.

       You  can	 edit  the /var/admin/sendmail/hostname.m4 file, modifying the
       define lines. The file contains comment lines (lines  that  begin  with
       dnl),  that  provide additional information. For example, the following
       define line specifies that RFC976-style addressing is disabled:

       define (_RFC976, {})dnl

       To enable RFC976-style addressing, modify the line as follows:

       define (_RFC976, {T})dnl

       The T enables RFC976-style addressing. After you edit the file,	change
       to  the	/var/adm/sendmail directory and issue the following command: #
       make -f Makefile.cf.hostname:

       This command generates a hostname.cf file. To use  the  new  configura‐
       tion,  copy the hostname.cf file to sendmail.cf and restart sendmail by
       using the /sbin/init.d/sendmail restart command.

       For more information, see the m4(1) and sendmail.m4(8) reference pages.

   User Configurable Mail Locking
       Different mailers use different methods to lock	mailbox	 files.	 Tru64
       UNIX  enables  you to configure the locking style.  To do this, use the
       /usr/sbin/rcmgr set command to  set  MAILLOCKING	 in  the  /etc/rc.con‐
       fig.common file.

       Valid  values  for MAILLOCKING are as follows: Specifies lockf.	Speci‐
       fies lockfile.	Specifies  Multi-channel  Memo	Distribution  Facility
       (MMDF). This applies to MH only.	 Specifies lockf.  Specifies that both
       lockf and lockfile are used.

   Restrictions
       Spool files are locked while being modified by using the lockf call and
       by using a lock file (/var/spool/mail/$USER.lock). When spool files are
       NFS-mounted the NFS lockd daemon should be running on both  the	client
       and server machine. Any user-added program that modifies the spool area
       must use lockf, the lock file method of locking, or both.

       ULTRIX Version 4.3 and earlier versions use lock	 file  locking.	 Queue
       files  (which  reside  in  the  /var/spool/mqueue directory) are locked
       using lockf. Sharing mqueue over NFS  is	 supported  with  NFS  locking
       (lockd) enabled.

STARTING THE MAIL SYSTEM
       To  start  the  mail  system,  use  the	following  procedure: Edit the
       /var/adm/sendmail/sendmail.cf file  to  change  the  macro  definitions
       described  in sendmail.cf(4).  Issue the newaliases command to initial‐
       ize the sendmail aliases database as follows:  #	 newaliases  Stop  the
       current	 sendmail   process   by   using   the	following  command:  #
       /sbin/init.d/sendmail stop Start the sendmail  utility  as  follows:  #
       /sbin/init.d/sendmail start

       Alternatively,  steps  2	 through  4  can  be accomplished by using the
       restart	option	to  the	 sendmail  startup  script   as	  follows:   #
       /sbin/init.d/sendmail restart

       This command does the following: Initializes the sendmail aliases data‐
       base Stops the current sendmail process Starts the sendmail utility

POST OFFICE PROTOCOL
       The Post Office Protocol (POP or POP3) is a client/server protocol that
       allows  users  to  download their E-mail from a mail server to a remote
       client.	It is intended for users who prefer to access their E-mail  in
       an  offline  mode, a mode that is used widely today by Internet Service
       Providers (ISP) to provide E-mail services for their customers.

       The operating system includes a POP3 server from Qualcomm Incorporated,
       which  is  fully	 installed and configured for you when you install the
       OSFINET subset.	Any users listed in the /etc/password file are	subse‐
       quently	enabled	 to receive POP mail, if they desire; however, you can
       improve security on your mail server by implementating alternate	 pass‐
       words  for their login authentication.  See the Network Administration:
       Services manual for more information on authentication and  administer‐
       ing POP.

INTERNET MESSAGE ACCESS PROTOCOL
       The Internet Message Access Protocol (IMAP or IMAP4) is a client/server
       protocol that allows users access their	mail  messages	on  a  server.
       With  it,  a user can access his or her mail folders and manipulate the
       contents remotely without having to log into the server.	 In  addition,
       the user can download a cache copy of selected messages from the server
       to a local system for offline browsing.

       The most beneficial feature of IMAP is that it allows  users  to	 resy‐
       chronize	 their	cached	mail folders on the local system with the mail
       folders on the server. The latter can be especially useful  for	people
       who  use different computers (at work, at home, or on the road) at dif‐
       ferent times to access their messages.  For example, if a user  deletes
       mail  from  his	computer  at work, the change is automatically carried
       over to his computer at home and his laptop during subsequent resychro‐
       nizations.

       The  operating  system  includes the Cyrus IMAP4 Revision 1 server from
       Carnegie-Mellon University, which is fully installed and configured for
       you  when  you install the OSFINET subset.  See the Network Administra‐
       tion: Services manual for information on configuring  users,  migrating
       users from POP to IMAP mail, enabling alternate passwords, and adminis‐
       tering IMAP.

RELATED INFORMATION
       Commands: imapd(8), mail(1), mailconfig(8), mailx(1),  pop3d(8),	 send‐
       mail(8)

       Files: aliases(4), imapd.conf(4), sendmail.cf(4), sendmail.m4(8)

       Network: mail_intro(7)

       System calls: syslog(3)

       Network Administration: Services

							  mail_manual_setup(7)
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