Fix missing exim4 configuration block.

install/ubuntu/14.04/exim/exim4.conf.template

@@ -101,6 +101,12 @@ acl_check_mail:
 acl_check_rcpt:
   accept  hosts         = :
 
+  deny message = Email account is sending too much emails [limitlog]: deny / email / $authenticated_id / $sender_rate / $sender_rate_period
+  ratelimit = 40 / 1h / $authenticated_id
+
+  warn ratelimit = 0 / 1h / strict / $authenticated_id
+  log_message = Sender rate [limitlog]: log / email / $authenticated_id / $sender_rate / $sender_rate_period
+
   deny    message       = Restricted characters in address
           domains       = +local_domains
           local_parts   = ^[.] : ^.*[@%!/|]

install/ubuntu/16.04/exim/exim4.conf.template

@@ -101,6 +101,12 @@ acl_check_mail:
 acl_check_rcpt:
   accept  hosts         = :
 
+  deny message = Email account is sending too much emails [limitlog]: deny / email / $authenticated_id / $sender_rate / $sender_rate_period
+  ratelimit = 40 / 1h / $authenticated_id
+
+  warn ratelimit = 0 / 1h / strict / $authenticated_id
+  log_message = Sender rate [limitlog]: log / email / $authenticated_id / $sender_rate / $sender_rate_period
+
   deny    message       = Restricted characters in address
           domains       = +local_domains
           local_parts   = ^[.] : ^.*[@%!/|]

install/ubuntu/18.04/exim/exim4.conf.template

@@ -101,6 +101,12 @@ acl_check_mail:
 acl_check_rcpt:
   accept  hosts         = :
 
+  deny message = Email account is sending too much emails [limitlog]: deny / email / $authenticated_id / $sender_rate / $sender_rate_period
+  ratelimit = 40 / 1h / $authenticated_id
+
+  warn ratelimit = 0 / 1h / strict / $authenticated_id
+  log_message = Sender rate [limitlog]: log / email / $authenticated_id / $sender_rate / $sender_rate_period
+
   deny    message       = Restricted characters in address
           domains       = +local_domains
           local_parts   = ^[.] : ^.*[@%!/|]