anchor.diff:  # to any other host on the Internet. Such a setting commonly refers to a
   # complete local network as well as the localhost. For example:
   #
  -# hostlist relay_from_hosts = 127.0.0.1 : 192.168.0.0/16
  +# hostlist relay_from_hosts = <; 127.0.0.1 ; ::1 ; 192.168.0.0/16
   #
   # The "/16" is a bit mask (CIDR notation), not a number of hosts. Note that you
   # have to include 127.0.0.1 if you want to allow processes on your host to send
   # SMTP mail by using the loopback address. A number of MUAs use this method of
  -# sending mail.
  +# sending mail.  Often, connections are made to "localhost", which might be ::1
  +# on IPv6-enabled hosts.  Do not forget CIDR for your IPv6 networks.
   
   # All three of these lists may contain many different kinds of item, including
   # wildcarded names, regular expressions, and file lookups. See the reference
  
positive.code: # to control sender and recipient addresses, respectively. When this is done,
  # unqualified addresses are qualified using the settings of qualify_domain
  # and/or qualify_recipient (see above).
  
  
  # If you want Exim to support the "percent hack" for certain domains,
  
negative.code: # split_spool_directory = true
  
  
  # If you're in a part of the world where ASCII is not sufficient for most
  # text, then you're probably familiar with RFC2047 message header extensions.
  # By default, Exim adheres to the specification, including a limit of 76
  # characters to a line, with encoded words fitting within a line.
  # If you wish to use decoded headers in message filters in such a way
  # that successful decoding of malformed messages matters, you may wish to
  # configure Exim to be more lenient.
  #
  # check_rfc2047_length = false
  #
  # In particular, the Exim maintainers have had multiple reports of problems
  # from Russian administrators of issues until they disable this check,
  # because of some popular, yet buggy, mail composition software.
  
  
  # If you wish to be strictly RFC compliant, or if you know you'll be
  # exchanging email with systems that are not 8-bit clean, then you may
  # wish to disable advertising 8BITMIME.  Uncomment this option to do so.
  
  # accept_8bitmime = false
  
  
  # Exim does not make use of environment variables itself. However,
  # libraries that Exim uses (e.g. LDAP) depend on specific environment settings.
  # There are two lists: keep_environment for the variables we trust, and
  # add_environment for variables we want to set to a specific value.
  # Note that TZ is handled separately by the timezone runtime option
  # and TIMEZONE_DEFAULT buildtime option.
  
  # keep_environment = ^LDAP
  # add_environment = PATH=/usr/bin::/bin
  
  
  # Define trusted users.
  
  trusted_users = <%= node[:exim][:trusted_users].join(" : ") %>
  
  
  
  