remove mailsync boot delay

This isn't needed when we can just specify that the service runs after
network.target.

README.md

@@ -132,9 +132,8 @@ connectivity using NetworkMananger. `mailsync` may be called directly by the
 user, ie by configuring a hotkey in Mutt.
 
 A [systemd timer][15] is also included to periodically call `mailsync`. The
-timer includes a 2 minute boot delay (to allow time for network connectivity to
-be established, configurable through the `mail.sync_boot_delay` variable) and
-syncs every 10 minutes (configurable through the `mail.sync_time` variable).
+timer is set to sync every 10 minutes (configurable through the
+`mail.sync_time` variable).
 
 The timer is not started or enabled by default. Instead, a NetworkManager
 dispatcher is installed, which activates the timer whenever a connection is

group_vars/all

@@ -26,7 +26,6 @@ ssh:
 mail:
     sync_tool: isync
     sync_time: 10min
-    sync_boot_delay: 2min
     sync_on: trusted
 
 network:

roles/mail/files/mailsync.service

@@ -1,5 +1,6 @@
 [Unit]
 Description=Mailbox synchronization service for user %I
+After=network.target
 
 [Service]
 Type=oneshot

roles/mail/templates/mailsync.timer.j2

@@ -3,7 +3,6 @@
 Description=Mailbox synchronization timer
 
 [Timer]
-OnBootSec={{ mail.sync_boot_delay }}
 OnUnitActiveSec={{ mail.sync_time }}
 Unit=mailsync@%i.service