diff -Nru kopanocore-8.3.4/debian/apparmor/usr.sbin.kopano-server kopanocore-8.3.4/debian/apparmor/usr.sbin.kopano-server
--- kopanocore-8.3.4/debian/apparmor/usr.sbin.kopano-server	2017-11-06 16:35:04.000000000 -0800
+++ kopanocore-8.3.4/debian/apparmor/usr.sbin.kopano-server	2017-11-21 19:56:25.000000000 -0800
@@ -1,6 +1,6 @@
 #include <tunables/global>
 
-/usr/sbin/kopano-server {
+/usr/sbin/kopano-server flags=(attach_disconnected) {
   #include <abstractions/base>
   #include <abstractions/nameservice>
   #include <abstractions/user-tmp>
@@ -23,7 +23,7 @@
   /run/kopano/server.pid rw,
   /run/kopano/server.sock rw,
 
-  /usr/lib/x86_64-linux-gnu/kopano/*.so m,
+  /usr/lib/@{multiarch}/kopano/*.so m,
 
   /var/lib/kopano/attachments/ r,
   /var/lib/kopano/attachments/** rw,
diff -Nru kopanocore-8.3.4/debian/changelog kopanocore-8.3.4/debian/changelog
--- kopanocore-8.3.4/debian/changelog	2017-11-07 00:58:11.000000000 -0800
+++ kopanocore-8.3.4/debian/changelog	2017-11-21 20:45:43.000000000 -0800
@@ -1,3 +1,17 @@
+kopanocore (8.3.4-4ubuntu4) bionic; urgency=medium
+
+  * Fix failing autopkgtests (LP: #1733591):
+  * debian/kopano-server.dirs: create /var/lib/kopano/attachments, not just
+    /var/lib/kopano.
+  * debian/kopano-server.kopano-server.service: chown the subdirectory.
+  * debian/apparmor/usr.sbin.kopano-server: set flags=(attach_disconnected)
+    to resolve an unexplained failure to connect to the mysql socket in
+    autopkgtests.
+  * debian/apparmor/usr.sbin.kopano-server: use @{multiarch} instead of a
+    wrongly hard-coded arch string.
+
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Tue, 21 Nov 2017 20:45:43 -0800
+
 kopanocore (8.3.4-4ubuntu3) bionic; urgency=medium
 
   * No-change rebuild for icu soname change.
diff -Nru kopanocore-8.3.4/debian/kopano-server.dirs kopanocore-8.3.4/debian/kopano-server.dirs
--- kopanocore-8.3.4/debian/kopano-server.dirs	2017-11-06 16:35:04.000000000 -0800
+++ kopanocore-8.3.4/debian/kopano-server.dirs	2017-11-21 18:11:59.000000000 -0800
@@ -1 +1 @@
-var/lib/kopano
+var/lib/kopano/attachments
diff -Nru kopanocore-8.3.4/debian/kopano-server.kopano-server.service kopanocore-8.3.4/debian/kopano-server.kopano-server.service
--- kopanocore-8.3.4/debian/kopano-server.kopano-server.service	2017-11-06 16:35:04.000000000 -0800
+++ kopanocore-8.3.4/debian/kopano-server.kopano-server.service	2017-11-21 18:12:41.000000000 -0800
@@ -15,6 +15,7 @@
 ExecStartPre=/bin/mkdir -p /var/run/kopano
 ExecStartPre=/bin/chown kopano /var/run/kopano
 ExecStartPre=/bin/chown kopano /var/lib/kopano
+ExecStartPre=/bin/chown kopano /var/lib/kopano/attachments
 ExecStart=/usr/sbin/kopano-server -F -c /etc/kopano/server.cfg
 KillMode=process
 ExecReload=/bin/kill -HUP $MAINPID