Route email From: *.acm.org via Mailroute.

pillar/secrets/smtpauth.sls.sample

@@ -0,0 +1,9 @@
+smtpauth:
+  smtpauth_passwd_client: |
+    # password file used when the local exim is authenticating to a remote
+    # host as a client.
+    #
+    # see exim4_passwd_client(5) for more documentation
+    #
+    # Example:
+    ### target.mail.server.example:login:password

states/email/exim4.sls

@@ -17,6 +17,14 @@ exim4_certs_group:
     - addusers:
       - Debian-exim
 
+exim4_smtpauth_passwd:
+  file.managed:
+    - mode: 0640
+    - group: Debian-exim
+    - names:
+      - /etc/exim4/passwd.client:
+        - contents_pillar: smtpauth:smtpauth_passwd_client
+
 exim4_dkim_private_keys:
   file.managed:
     - mode: 0640

states/email/exim4/update-exim4.conf.conf

@@ -23,7 +23,7 @@ dc_readhost=''
 dc_relay_domains=''
 dc_minimaldns='false'
 dc_relay_nets=''
-dc_smarthost='smtpout.mythic-beasts.com'
+dc_smarthost='"${if match{${lc:$header_from:}}{.*acm.org}{smtpauth.mailroute.net::587}{smtpout.mythic-beasts.com}}"'
 CFILEMODE='644'
 dc_use_split_config='true'
 dc_hide_mailname='false'