fix mail setup for exim

diff --git a/mail-setup b/mail-setup
index ead9423f012f9268a97a9d8efcff1ed55e7d11fe..b43bde401ff2d1227741475b02a4cf2bea82e041 100755 (executable)
--- a/mail-setup
+++ b/mail-setup
@@ -144,6 +144,9 @@ EOF
     s service postfix reload
 
 else # exim. has debian specific stuff for now
+    # debconf settings will not work if packages are already installed,
+    # such as on vps images.
+    pu exim4-daemon-light exim4-daemon-heavy exim4-config exim4-base exim4
 
     # wording of question from dpkg-reconfigure exim4-config
     # 1. internet site; mail is sent and received directly using SMTP
@@ -152,27 +155,27 @@ else # exim. has debian specific stuff for now
     # 4. local delivery only; not on a network
     # 5. no configuration at this time
     #
-    # only the one receiving host needs option 2, the rest can do option 1, but
-    # that host might change, so we pick option 2 and later
-    # don't set it up to receive anything. Also, only receiving host needs
-    # dc_other_hostnames and beyond, but no harm.
+    # only the one receiving host needs option 2, the rest can do option
+    # 1, but that host might change, so we pick option 2 and later don't
+    # set it up to receive anything, because it has nothing in it's
+    # receiving password file and we make that mandatory. Also, only
+    # receiving host needs dc_other_hostnames and beyond, but no harm.
 
     # note, another related setting is /etc/mailname, which
     # is set to be $HOSTNAME.lan on stretch. this may need to be
     # setup on other distros.
 
-    #
+    # setting local_interfaces to empty listens on all interfaces.
+    # default is 127.0.0.1 ; ::1, so only listen to lo interface.
     s debconf-set-selections <<EOF
 exim4-config exim4/dc_eximconfig_configtype select mail sent by smarthost; received via SMTP or fetchmail
 exim4-config exim4/dc_smarthost string $smarthost
 exim4-config exim4/use_split_config boolean true
 exim4-config exim4/dc_other_hostnames string mail.iankelling.org
+exim4-config exim4/dc_local_interfaces string
 exim4-config exim4/dc_postmaster string ian
 exim4-config exim4/dc_localdelivery select Maildir format in home directory
 EOF
-    # debconf settings will not work if packages are already installed,
-    # such as on vps images.
-    pu exim4-daemon-light exim4-daemon-heavy exim4-config exim4-base exim4
     # light version does not have sasl auth support.
     pi exim4-daemon-heavy