meillo@67: http://qref.sourceforge.net/Debian/reference/reference.en.txt
meillo@67: 
meillo@67: 9.6.1. Mail transport agents (MTAs)
meillo@67: -----------------------------------
meillo@67: 
meillo@67:      For a full-featured MTA, use `exim' in Woody and use `exim4' in Sarge.
meillo@67:      [1] References:
meillo@67:         * `exim-doc' and `exim-doc-html' packages for `exim'
meillo@67:         * `exim4-doc-info' and `exim4-doc-html' packages for `exim4'
meillo@67:         * http://www.exim.org/
meillo@67:      The only reasonable alternative MTA is `postfix' if you care about
meillo@67:      security.  `sendmail' and `qmail' are available as Debian packages but
meillo@67:      are not recommended.
meillo@67: 
meillo@67:      If you do not need the relay capability of an MTA as in the case of a
meillo@67:      satellite system such as a laptop PC, you may consider using one of
meillo@67:      these lightweight packages:
meillo@67:         * `ssmtp': needs an SMTP connection and is alias-capable, or
meillo@67:         * `nullmailer': can spool but is not alias-capable.
meillo@67:      At this moment, I find `exim' to be more suitable even for my personal
meillo@67:      workstation machine, which is a laptop PC.
meillo@67: 
meillo@67:      You may need to remove `exim' for the installation of these
meillo@67:      conflicting packages:
meillo@67: 
meillo@67:           # dpkg -P --force-depends exim
meillo@67:           # apt-get install nullmailer         # or ssmtp
meillo@67: 
meillo@67: [1]  Following sections use `exim' in examples.  For Sarge replace this
meillo@67:      with `exim4' as needed.
meillo@67: 
meillo@67: 9.6.1.1. Smarthost
meillo@67: ------------------
meillo@67: 
meillo@67:      If you are running `exim4' or `exim' on a host which is connected
meillo@67:      through the consumer grade services, please make sure to send outgoing
meillo@67:      mail through a smarthost offered by your ISP or some others.  [1]
meillo@67:      There are few good reasons:
meillo@67:         * to ensure SMTP retries since your ISP's smarthost usually have
meillo@67:           more reliably connection.
meillo@67:         * to avoid sending mail directly from a _dynamic IP address_ which
meillo@67:           will likely be blocked by dial-up spam lists.
meillo@67:         * to save your local bandwidth to send mails with multiple
meillo@67:           recipients.
meillo@67: 
meillo@67:      The only conceivable exceptions are:
meillo@67:         * the emergency cure for your ISP's SMTP service trouble.
meillo@67:         * an experiment for the educational purpose.
meillo@67:         * your host being a professionally hosted server.
meillo@67: 
meillo@67: [1]  You must follow this rule for any hosts on dial-up, DSL, cable
meillo@67:      services or LAN through some broadband router.  Even if your home host
meillo@67:      has a fixed IP from your ISP, it is still a good idea to follow this
meillo@67:      rule.  Most workstations and home servers fall into this category.
meillo@67: