--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/exim4.conf	Fri Dec 20 17:28:48 2013 +0100
@@ -0,0 +1,65 @@
+# this is by no way a complete configuration file!
+# it's just intended as a starting point
+
+# The providers file
+# All relevant information about the smart providers is stored
+# in one place. This place is the "providers" file. The structure
+# is simple. It consists of lines as in the example:
+#
+# # sender     |server[:port]  |user|password
+# # -----------+---------------+----+---------
+# foo@bar.com	foobar.com      foo  secret
+# *@bar.com     bar.com/mx:smtp fuz  secret2
+# *		smtp.gmail.com  xxx  baz
+
+PROVIDERS = <your file name for the providers file here>
+
+# some macros to ease the understanding
+ADDRESS_DATA = ${sg{${lookup{$sender_address}lsearch*@{PROVIDERS}}}{\\s+}{\t}}
+SMARTHOST    = ${extract{1}{\x20\t}{$address_data}}
+HOST         = ${extract{1}{:}{SMARTHOST}}
+PORT         = ${extract{2}{:}{SMARTHOST}{$value}{submission}}
+USER         = ${extract{2}{\t}{$address_data}}
+PASS         = ${extract{3}{\t}{$address_data}}
+
+domainlist local_domains = @
+
+begin router
+
+# the first router routes according the sender_address
+smarthost:
+	driver = manualroute
+	address_data = ADDRESS_DATA
+	route_data = HOST
+	transport = smtp_auth
+
+# in case you don't have a '*' line in your providers file
+
+dnslookup:
+	driver = dnslookup
+	domains = !+local_domains
+	transport = smtp
+	no_more
+
+begin transport
+
+smtp_auth:
+	driver = smtp
+	hosts_require_auth = *
+	port = PORT
+
+smtp:
+	driver = smtp
+
+begin authenticators
+
+plain:
+	driver = plaintext
+	public_name = PLAIN
+	client_send = ^USER^PASS
+	
+
+login:
+	driver = plaintext
+	public_name = LOGIN	
+	client_send = :USER:PASS