qmail-upgrade(7)  Device and Network Interfaces  qmail-upgrade(7)

     qmail-upgrade - user-visible differences between  qmail  and

     You will notice some differences when  the  system  switches
     from sendmail to qmail.

     1.   qmail-local sends  incoming  mail  to  ~you/Mailbox  by
          default, not /usr/spool/mail/you.  Your system adminis-
          trator has changed your MAIL  environment  variable  so
          that   your   mail   reader   looks  for  ~you/Mailbox.
          (/usr/spool/mail is a massive security problem.)

     2.   qmail-local pays no attention to .forward.   It  has  a
          much  better  mechanism, .qmail, so that you can handle
          not only forwarding but even your  own  mailing  lists.
          See below for more details.

     3.   qmail-local pays no attention  to  /etc/aliases.   Your
          system  administrator  can  use  the  .qmail  mechanism
          instead.  See below.

     4.   qmail does not support the \you mechanism for  ignoring
          aliases.   The  .qmail mechanism is much more flexible;
          see below.

     5.   qmail-inject has a completely different philosophy from
          sendmail   on   interpreting  non-fully-qualified  host
          names.  It uses fixed rules, not DNS.  Some examples at

               russet -> russet.math.uic.edu
               newton -> newton.math.uic.edu
               ut.ee  -> ut.ee  (a host in Estonia)
               ut.ee+ -> ut.ee.uic.edu
               uicvm+ -> uicvm.uic.edu

          Here the default domain name (for hosts  without  dots)
          is math.uic.edu, and the plus domain name is uic.edu.

     6.   Unlike  sendmail,  qmail-inject  doesn't  replace  host
          names  with  canonical  names.   Example:  qmail-inject
          won't  change  [email protected]  in  your
          header to [email protected].

     7.   qmail-local adds  a  new  field,  Delivered-To,  before
          every  delivery.   It uses the contents of Delivered-To
          to prevent mail forwarding loops.

     8.   If you send a message with only Bcc recipients,  qmail-
          inject  will add Cc: recipient list not shown:;, rather

SunOS 5.5                 Last change:                          1

qmail-upgrade(7)  Device and Network Interfaces  qmail-upgrade(7)

          than sendmail's privacy-invading  Apparently-To  header

     sendmail deals with aliases, forwarding, and  mailing  lists
     at the very heart of the mail system.

     qmail takes a radically different approach.   It  gives  you
     the power to set up your own mailing lists without pestering
     your system administrator.

     Under qmail, you are in charge of all addresses of the  form
     you-anything.  The delivery of you-anything is controlled by
     ~you/.qmail-anything, a file in your home directory.

     For example, if you want to set up  a  bug-of-the-month-club
     mailing   list,  you  can  put  a  list  of  addresses  into
     ~you/.qmail-botmc.  Any mail to you-botmc will be  forwarded
     to  all  of  those  addresses.  Mail directly to you is con-
     trolled by ~you/.qmail.  You can even set  up  a  catch-all,
     ~you/.qmail-default, to handle unknown you- addresses.

     Your .qmail files, like your old .forward, may  list  files,
     forwarding addresses, or other programs to run.  (But beware
     that the syntax is a bit  different;  see  dot-qmail(5)  for
     more details.)  qmail-local automatically detects forwarding
     loops the instant they occur, even if they happen indirectly
     through other hosts.

     As a helpful special case, if a .qmail  file  is  empty,  it
     refers   to   ~you/Mailbox.    For  example,  if  you  touch
     ~you/.qmail-direct, mail for you-direct will act  like  \you
     did under sendmail.

     Addresses that don't contain a username are handled  by  the
     alias  user.  For example, your system administrator has set
     up ~alias/.qmail-postmaster to handle mail  for  Postmaster.
     (Note  to administrators:  ~alias doesn't apply to addresses
     that start with a user name, with certain exceptions.)

     addresses(5), dot-qmail(5),  envelopes(5),  qmail-header(8),

SunOS 5.5                 Last change:                          2