diff --git a/ansible.cfg b/ansible.cfg
index 6afb07fa..8d528bd6 100644
--- a/ansible.cfg
+++ b/ansible.cfg
@@ -1,11 +1,11 @@
-# Crans Ansible configuration
+# Ansible configuration
 
 [defaults]
 
 # Do not create .retry files
 retry_files_enabled = False
 
-# Use Crans inventory
+# Use inventory
 inventory = ./hosts
 
 # Custom header in templates
diff --git a/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2 b/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2
index 44ceef73..2e2a8af1 100644
--- a/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2
+++ b/roles/prometheus-alertmanager/templates/prometheus/alertmanager.yml.j2
@@ -1,12 +1,16 @@
 # {{ ansible_managed }}
+# See https://prometheus.io/docs/alerting/configuration/ for documentation.
 
 global:
   # The smarthost and SMTP sender used for mail notifications.
-  smtp_smarthost: 'smtp.adm.crans.org:25'
-  smtp_from: 'roots@crans.org'
+  smtp_smarthost: 'localhost:25'
+  smtp_from: 'alertmanager@example.org'
   #smtp_auth_username: 'alertmanager'
   #smtp_auth_password: 'password'
-  smtp_require_tls: false
+  # The auth token for Hipchat.
+  hipchat_auth_token: '1234556789'
+  # Alternative host for Hipchat.
+  hipchat_api_url: 'https://hipchat.foobar.org/'
 
 # The directory from which notification templates are read.
 templates: 
@@ -17,26 +21,24 @@ route:
   # The labels by which incoming alerts are grouped together. For example,
   # multiple alerts coming in for cluster=A and alertname=LatencyHigh would
   # be batched into a single group.
-  #group_by: ['alertname', 'cluster', 'service']
-  group_by: []  # do not group for text chat
+  group_by: ['...']  # do not group for text chat
 
   # When a new group of alerts is created by an incoming alert, wait at
   # least 'group_wait' to send the initial notification.
   # This way ensures that you get multiple alerts for the same group that start
   # firing shortly after another are batched together on the first 
   # notification.
-  group_wait: 1m
+  group_wait: 30s
 
   # When the first notification was sent, wait 'group_interval' to send a batch
   # of new alerts that started firing for that group.
-  group_interval: 1m
+  group_interval: 5m
 
   # If an alert has successfully been sent, wait 'repeat_interval' to
   # resend them.
   repeat_interval: 12h 
 
   # A default receiver
-  #receiver: team-roots-mails
   receiver: webhook-ninjabot
 
 
@@ -54,9 +56,6 @@ inhibit_rules:
 
 
 receivers:
-- name: 'team-roots-mails'
-  email_configs:
-  - to: 'roots@crans.org'
 - name: 'webhook-ninjabot'
   webhook_configs:
   - url: 'http://zamok.adm.crans.org:5000/'