diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index c441c008b..68f3f9f95 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -15,7 +15,7 @@ class ApplicationController < ActionController::Base
                 :model_index_render
 
   skip_before_action :verify_authenticity_token
-  before_action :set_user, :session_update, :user_device_check, :cors_preflight_check
+  before_action :set_interface_handle, :set_user, :session_update, :user_device_check, :cors_preflight_check
   after_action  :trigger_events, :http_log, :set_access_control_headers
 
   rescue_from StandardError, with: :server_error
@@ -58,6 +58,10 @@ class ApplicationController < ActionController::Base
 
   private
 
+  def set_interface_handle
+    ApplicationHandleInfo.current = 'application_server'
+  end
+
   # execute events
   def trigger_events
     Observer::Transaction.commit
diff --git a/app/models/channel/email_parser.rb b/app/models/channel/email_parser.rb
index afd7871ba..80e0b7e14 100644
--- a/app/models/channel/email_parser.rb
+++ b/app/models/channel/email_parser.rb
@@ -390,6 +390,8 @@ retrns
   end
 
   def _process(channel, msg)
+
+    # parse email
     mail = parse(msg)
 
     # run postmaster pre filter
@@ -410,7 +412,14 @@ retrns
     }
 
     # check ignore header
-    return true if mail[ 'x-zammad-ignore'.to_sym ] == 'true' || mail[ 'x-zammad-ignore'.to_sym ] == true
+    if mail[ 'x-zammad-ignore'.to_sym ] == 'true' || mail[ 'x-zammad-ignore'.to_sym ] == true
+      Rails.logger.info "ignored email with msgid '#{mail[:message_id]}' from '#{mail[:from]}' because of x-zammad-ignore header"
+      return true
+    end
+
+    # set interface handle
+    original_interface_handle = ApplicationHandleInfo.current
+    ApplicationHandleInfo.current = "#{original_interface_handle}.postmaster"
 
     ticket  = nil
     article = nil
@@ -497,11 +506,9 @@ retrns
         set_attributes_by_x_headers(ticket, 'ticket', mail)
 
         # create ticket
-        ticket.save
+        ticket.save!
       end
 
-      # import mail
-
       # set attributes
       article = Ticket::Article.new(
         ticket_id: ticket.id,
@@ -521,7 +528,7 @@ retrns
       set_attributes_by_x_headers(article, 'article', mail)
 
       # create article
-      article.save
+      article.save!
 
       # store mail plain
       Store.add(
@@ -546,6 +553,8 @@ retrns
       end
     end
 
+    ApplicationHandleInfo.current = original_interface_handle
+
     # execute object transaction
     Observer::Transaction.commit
 
@@ -617,8 +626,8 @@ retrns
         item_object[key] = mail[ header.to_sym ]
       end
     }
-
   end
+
 end
 
 # workaround to parse subjects with 2 different encodings correctly (e. g. quoted-printable see test/fixtures/mail9.box)
diff --git a/app/models/channel/filter/database.rb b/app/models/channel/filter/database.rb
index fae850f29..8b5e2ada9 100644
--- a/app/models/channel/filter/database.rb
+++ b/app/models/channel/filter/database.rb
@@ -8,7 +8,7 @@ module Channel::Filter::Database
     # process postmaster filter
     filters = PostmasterFilter.where( active: true, channel: 'email' ).order(:name, :created_at)
     filters.each { |filter|
-      Rails.logger.info " proccess filter #{filter.name} ..."
+      Rails.logger.info " process filter #{filter.name} ..."
       all_matches_ok = true
       min_one_rule_exists = false
       filter[:match].each { |key, meta|
diff --git a/app/models/observer/ticket/article/communicate_email.rb b/app/models/observer/ticket/article/communicate_email.rb
index 10a383eb6..78a2bfd27 100644
--- a/app/models/observer/ticket/article/communicate_email.rb
+++ b/app/models/observer/ticket/article/communicate_email.rb
@@ -8,7 +8,11 @@ class Observer::Ticket::Article::CommunicateEmail < ActiveRecord::Observer
     # return if we run import mode
     return if Setting.get('import_mode')
 
-    # if sender is customer, do not communication
+    # only do send email if article got created via application_server (e. g. not
+    # if article and sender type is set via *.postmaster)
+    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+
+    # if sender is customer, do not communicate
     sender = Ticket::Article::Sender.lookup(id: record.sender_id)
     return 1 if sender.nil?
     return 1 if sender['name'] == 'Customer'
diff --git a/app/models/observer/ticket/article/communicate_email/background_job.rb b/app/models/observer/ticket/article/communicate_email/background_job.rb
index aa1b21d03..571cd0b18 100644
--- a/app/models/observer/ticket/article/communicate_email/background_job.rb
+++ b/app/models/observer/ticket/article/communicate_email/background_job.rb
@@ -66,7 +66,7 @@ class Observer::Ticket::Article::CommunicateEmail::BackgroundJob
     record.preferences['delivery_status_message'] = nil
     record.preferences['delivery_status'] = 'success'
     record.preferences['delivery_status_date'] = Time.zone.now
-    record.save
+    record.save!
 
     # store mail plain
     Store.add(
@@ -91,6 +91,8 @@ class Observer::Ticket::Article::CommunicateEmail::BackgroundJob
       recipient_list += record[key]
     }
 
+    Rails.logger.info "Send email to: '#{recipient_list}' (from #{record.from})"
+
     return if recipient_list == ''
 
     History.add(
diff --git a/app/models/observer/ticket/article/communicate_facebook.rb b/app/models/observer/ticket/article/communicate_facebook.rb
index 73ad34211..5eec88079 100644
--- a/app/models/observer/ticket/article/communicate_facebook.rb
+++ b/app/models/observer/ticket/article/communicate_facebook.rb
@@ -10,7 +10,11 @@ class Observer::Ticket::Article::CommunicateFacebook < ActiveRecord::Observer
     # return if we run import mode
     return if Setting.get('import_mode')
 
-    # if sender is customer, do not communication
+    # only do send email if article got created via application_server (e. g. not
+    # if article and sender type is set via *.postmaster)
+    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+
+    # if sender is customer, do not communicate
     sender = Ticket::Article::Sender.lookup(id: record.sender_id)
     return 1 if sender.nil?
     return 1 if sender['name'] == 'Customer'
diff --git a/app/models/observer/ticket/article/communicate_facebook/background_job.rb b/app/models/observer/ticket/article/communicate_facebook/background_job.rb
index 5c53fab39..bdbe1d1dd 100644
--- a/app/models/observer/ticket/article/communicate_facebook/background_job.rb
+++ b/app/models/observer/ticket/article/communicate_facebook/background_job.rb
@@ -59,7 +59,11 @@ class Observer::Ticket::Article::CommunicateFacebook::BackgroundJob
     article.preferences['delivery_status'] = 'success'
     article.preferences['delivery_status_date'] = Time.zone.now
 
-    article.save
+    article.save!
+
+    Rails.logger.info "Send facebook to: '#{article.to}' (from #{article.from})"
+
+    article
   end
 
   def log_error(local_record, message)
diff --git a/app/models/observer/ticket/article/communicate_twitter.rb b/app/models/observer/ticket/article/communicate_twitter.rb
index c68ce42e9..8a4264fdc 100644
--- a/app/models/observer/ticket/article/communicate_twitter.rb
+++ b/app/models/observer/ticket/article/communicate_twitter.rb
@@ -8,7 +8,11 @@ class Observer::Ticket::Article::CommunicateTwitter < ActiveRecord::Observer
     # return if we run import mode
     return if Setting.get('import_mode')
 
-    # if sender is customer, do not communication
+    # only do send email if article got created via application_server (e. g. not
+    # if article and sender type is set via *.postmaster)
+    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+
+    # if sender is customer, do not communicate
     sender = Ticket::Article::Sender.lookup(id: record.sender_id)
     return if sender.nil?
     return if sender['name'] == 'Customer'
diff --git a/app/models/observer/ticket/article/communicate_twitter/background_job.rb b/app/models/observer/ticket/article/communicate_twitter/background_job.rb
index 6c99790cc..1b3e379e4 100644
--- a/app/models/observer/ticket/article/communicate_twitter/background_job.rb
+++ b/app/models/observer/ticket/article/communicate_twitter/background_job.rb
@@ -68,8 +68,11 @@ class Observer::Ticket::Article::CommunicateTwitter::BackgroundJob
     article.preferences['delivery_status_date'] = Time.zone.now
 
     article.message_id = tweet.id.to_s
-    article.save
+    article.save!
 
+    Rails.logger.info "Send twitter (#{tweet.class}) to: '#{article.to}' (from #{article.from})"
+
+    article
   end
 
   def log_error(local_record, message)
diff --git a/app/models/observer/ticket/article/fillup_from_email.rb b/app/models/observer/ticket/article/fillup_from_email.rb
index d28fa108a..4090ca182 100644
--- a/app/models/observer/ticket/article/fillup_from_email.rb
+++ b/app/models/observer/ticket/article/fillup_from_email.rb
@@ -8,6 +8,10 @@ class Observer::Ticket::Article::FillupFromEmail < ActiveRecord::Observer
     # return if we run import mode
     return if Setting.get('import_mode')
 
+    # only do fill of email from if article got created via application_server (e. g. not
+    # if article and sender type is set via *.postmaster)
+    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+
     # if sender is customer, do not change anything
     sender = Ticket::Article::Sender.lookup(id: record.sender_id)
     return if sender.nil?
diff --git a/app/models/observer/ticket/article/fillup_from_general.rb b/app/models/observer/ticket/article/fillup_from_general.rb
index b54d20752..b509fc635 100644
--- a/app/models/observer/ticket/article/fillup_from_general.rb
+++ b/app/models/observer/ticket/article/fillup_from_general.rb
@@ -8,6 +8,10 @@ class Observer::Ticket::Article::FillupFromGeneral < ActiveRecord::Observer
     # return if we run import mode
     return if Setting.get('import_mode')
 
+    # only do fill of from if article got created via application_server (e. g. not
+    # if article and sender type is set via *.postmaster)
+    return if ApplicationHandleInfo.current.split('.')[1] == 'postmaster'
+
     # if sender is customer, do not change anything
     sender = Ticket::Article::Sender.lookup(id: record.sender_id)
     return if sender.nil?
diff --git a/app/models/observer/transaction.rb b/app/models/observer/transaction.rb
index bd70ae487..aaeb36fec 100644
--- a/app/models/observer/transaction.rb
+++ b/app/models/observer/transaction.rb
@@ -5,11 +5,10 @@ class Observer::Transaction < ActiveRecord::Observer
 
   def self.commit(params = {})
 
-    # add attribute if execution is via web
-    params[:via_web] = false
-    if ENV['RACK_ENV'] || Rails.configuration.webserver_is_active
-      params[:via_web] = true
-    end
+    # add attribute of interface handle (e. g. to send (no) notifications if a agent
+    # is creating a ticket via application_server, but send it if it's created via
+    # postmaster)
+    params[:interface_handle] = ApplicationHandleInfo.current
 
     # execute object transactions
     Observer::Transaction.perform(params)
diff --git a/app/models/scheduler.rb b/app/models/scheduler.rb
index 1f44b2257..560422b56 100644
--- a/app/models/scheduler.rb
+++ b/app/models/scheduler.rb
@@ -47,6 +47,7 @@ class Scheduler < ApplicationModel
   def self.start_job(job)
 
     Thread.new {
+      ApplicationHandleInfo.current = 'scheduler'
 
       logger.info "Started job thread for '#{job.name}' (#{job.method})..."
 
@@ -118,8 +119,12 @@ class Scheduler < ApplicationModel
 
     # used for tests
     if foreground
+      original_interface_handle = ApplicationHandleInfo.current
+      ApplicationHandleInfo.current = 'scheduler'
+
       original_user_id = UserInfo.current_user_id
       UserInfo.current_user_id = nil
+
       loop do
         success, failure = Delayed::Worker.new.work_off
         if failure.nonzero?
@@ -128,6 +133,7 @@ class Scheduler < ApplicationModel
         break if success.zero?
       end
       UserInfo.current_user_id = original_user_id
+      ApplicationHandleInfo.current = original_interface_handle
       return
     end
 
@@ -139,6 +145,7 @@ class Scheduler < ApplicationModel
       logger.info "Starting worker thread #{Delayed::Job}"
 
       loop do
+        ApplicationHandleInfo.current = 'scheduler'
         result = nil
 
         realtime = Benchmark.realtime do
diff --git a/app/models/transaction/background_job.rb b/app/models/transaction/background_job.rb
index a70c2e874..761026866 100644
--- a/app/models/transaction/background_job.rb
+++ b/app/models/transaction/background_job.rb
@@ -8,7 +8,7 @@ class Transaction::BackgroundJob
     object: 'Ticket',
     type: 'update',
     ticket_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     changes: {
       'attribute1' => [before,now],
       'attribute2' => [before,now],
diff --git a/app/models/transaction/cti_caller_id_detection.rb b/app/models/transaction/cti_caller_id_detection.rb
index 692485dab..314cb735d 100644
--- a/app/models/transaction/cti_caller_id_detection.rb
+++ b/app/models/transaction/cti_caller_id_detection.rb
@@ -8,7 +8,7 @@ class Transaction::CtiCallerIdDetection
     object: 'Ticket',
     type: 'create',
     object_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     user_id: 123,
     created_at: Time.zone.now,
   },
@@ -16,7 +16,7 @@ class Transaction::CtiCallerIdDetection
     object: 'User',
     type: 'update',
     object_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     changes: {
       'attribute1' => [before, now],
       'attribute2' => [before, now],
diff --git a/app/models/transaction/karma.rb b/app/models/transaction/karma.rb
index d41fec07f..fab593f32 100644
--- a/app/models/transaction/karma.rb
+++ b/app/models/transaction/karma.rb
@@ -7,7 +7,7 @@ class Transaction::Karma
     object: 'Ticket',
     type: 'update',
     object_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     changes: {
       'attribute1' => [before, now],
       'attribute2' => [before, now],
diff --git a/app/models/transaction/notification.rb b/app/models/transaction/notification.rb
index e7ee25062..09e90e4d5 100644
--- a/app/models/transaction/notification.rb
+++ b/app/models/transaction/notification.rb
@@ -7,7 +7,7 @@ class Transaction::Notification
     object: 'Ticket',
     type: 'update',
     object_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     changes: {
       'attribute1' => [before, now],
       'attribute2' => [before, now],
@@ -95,7 +95,7 @@ class Transaction::Notification
       channels = item[:channels]
 
       # ignore user who changed it by him self via web
-      if @params[:via_web]
+      if @params[:interface_handle] == 'application_server'
         next if article && article.updated_by_id == user.id
         next if !article && @item[:user_id] == user.id
       end
diff --git a/app/models/transaction/signature_detection.rb b/app/models/transaction/signature_detection.rb
index 2e362b35f..b2aac65c1 100644
--- a/app/models/transaction/signature_detection.rb
+++ b/app/models/transaction/signature_detection.rb
@@ -8,7 +8,7 @@ class Transaction::SignatureDetection
     object: 'Ticket',
     type: 'update',
     object_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     changes: {
       'attribute1' => [before, now],
       'attribute2' => [before, now],
diff --git a/app/models/transaction/slack.rb b/app/models/transaction/slack.rb
index 27e28ef47..bf4b630b1 100644
--- a/app/models/transaction/slack.rb
+++ b/app/models/transaction/slack.rb
@@ -1,30 +1,25 @@
 # Copyright (C) 2012-2014 Zammad Foundation, http://zammad-foundation.org/
 
 class Transaction::Slack
+
 =begin
 
-backend = Transaction::Slack.new(
-    object: 'Ticket',
-    type: 'create',
-    object_id: 1,
-    user_id: 123,
-    created_at: Time.zone.now,
-)
-backend.perform
-
-  {
+  backend = Transaction::Slack.new(
     object: 'Ticket',
     type: 'update',
     object_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     changes: {
       'attribute1' => [before, now],
       'attribute2' => [before, now],
     },
     created_at: Time.zone.now,
     user_id: 123,
-  },
+  )
+  backend.perform
+
 =end
+
   def initialize(item, params = {})
     @item = item
     @params = params
diff --git a/app/models/transaction/trigger.rb b/app/models/transaction/trigger.rb
index 524b8ab81..620d6cd96 100644
--- a/app/models/transaction/trigger.rb
+++ b/app/models/transaction/trigger.rb
@@ -7,7 +7,7 @@ class Transaction::Trigger
     object: 'Ticket',
     type: 'update',
     object_id: 123,
-    via_web: true,
+    interface_handle: 'application_server', # application_server|websocket|scheduler
     changes: {
       'attribute1' => [before, now],
       'attribute2' => [before, now],
diff --git a/config/initializers/web_server.rb b/config/initializers/web_server.rb
deleted file mode 100644
index c442d9d93..000000000
--- a/config/initializers/web_server.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-
-Rails.configuration.webserver_is_active = false
diff --git a/lib/application_handle_info.rb b/lib/application_handle_info.rb
new file mode 100644
index 000000000..854a9d8b4
--- /dev/null
+++ b/lib/application_handle_info.rb
@@ -0,0 +1,9 @@
+module ApplicationHandleInfo
+  def self.current
+    Thread.current[:application_handle] || 'unknown'
+  end
+
+  def self.current=(name)
+    Thread.current[:application_handle] = name
+  end
+end
diff --git a/lib/search_index_backend.rb b/lib/search_index_backend.rb
index 32dfd96c2..76e4f7d1c 100644
--- a/lib/search_index_backend.rb
+++ b/lib/search_index_backend.rb
@@ -59,7 +59,7 @@ create/update/delete index
     )
     Rails.logger.info "# #{response.code}"
     return true if response.success?
-    raise "Unable to proccess PUT at #{url}\n#{response.inspect}"
+    raise "Unable to process PUT at #{url}\n#{response.inspect}"
   end
 
 =begin
@@ -91,7 +91,7 @@ add new object to search index
     )
     Rails.logger.info "# #{response.code}"
     return true if response.success?
-    raise "Unable to proccess POST at #{url} (size: #{data.to_json.bytesize / 1024 / 1024}M)\n#{response.inspect}"
+    raise "Unable to process POST at #{url} (size: #{data.to_json.bytesize / 1024 / 1024}M)\n#{response.inspect}"
   end
 
 =begin
@@ -321,7 +321,7 @@ get count of tickets and tickets which match on selector
 
     Rails.logger.info "# #{response.code}"
     if !response.success?
-      raise "Unable to proccess POST at #{url}\n#{response.inspect}"
+      raise "Unable to process POST at #{url}\n#{response.inspect}"
     end
     Rails.logger.debug response.data.to_json
 
diff --git a/script/websocket-server.rb b/script/websocket-server.rb
index 87b4c5a7b..d9e693f24 100755
--- a/script/websocket-server.rb
+++ b/script/websocket-server.rb
@@ -95,6 +95,7 @@ if ARGV[0] == 'start' && @options[:d]
 end
 
 @clients = {}
+Rails.configuration.interface = 'websocket'
 EventMachine.run {
   EventMachine::WebSocket.start( host: @options[:b], port: @options[:p], secure: @options[:s], tls_options: tls_options ) do |ws|
 
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 57e468cab..497dc0870 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -42,6 +42,9 @@ class ActiveSupport::TestCase
     # set current user
     UserInfo.current_user_id = nil
 
+    # set interface handle
+    ApplicationHandleInfo.current = 'unknown'
+
     Rails.logger.info '++++NEW++++TEST++++'
   end
 
@@ -64,4 +67,22 @@ class ActiveSupport::TestCase
     count
   end
 
+  def email_count(recipient)
+
+    # read config file and count & recipients
+    file = "#{Rails.root}/log/#{Rails.env}.log"
+    lines = []
+    IO.foreach(file) do |line|
+      lines.push line
+    end
+    count = 0
+    lines.reverse.each { |line|
+      break if line =~ /\+\+\+\+NEW\+\+\+\+TEST\+\+\+\+/
+      next if line !~ /Send email to:/
+      next if line !~ /to:\s'#{recipient}'/
+      count += 1
+    }
+    count
+  end
+
 end
diff --git a/test/unit/online_notifiaction_test.rb b/test/unit/online_notifiaction_test.rb
index ba6f9d8a4..b5106c40b 100644
--- a/test/unit/online_notifiaction_test.rb
+++ b/test/unit/online_notifiaction_test.rb
@@ -42,7 +42,7 @@ class OnlineNotificationTest < ActiveSupport::TestCase
 
   test 'ticket notification' do
 
-    Rails.configuration.webserver_is_active = true
+    ApplicationHandleInfo.current = 'application_server'
 
     # case #1
     ticket1 = Ticket.create(
@@ -381,7 +381,7 @@ class OnlineNotificationTest < ActiveSupport::TestCase
       updated_by_id: 1,
       created_by_id: 1,
     )
-    assert( ticket1, 'ticket created' )
+    assert(ticket1, 'ticket created')
     article_inbound = Ticket::Article.create(
       ticket_id: ticket1.id,
       from: 'some_sender@example.com',
diff --git a/test/unit/ticket_notification_test.rb b/test/unit/ticket_notification_test.rb
index 8fc36d49d..9b1199140 100644
--- a/test/unit/ticket_notification_test.rb
+++ b/test/unit/ticket_notification_test.rb
@@ -109,6 +109,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
   test 'ticket notification - to all agents / to explicit agents' do
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'scheduler.postmaster'
     ticket1 = Ticket.create(
       title: 'some notification test 1',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -134,7 +135,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     assert(ticket1)
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = nil
     Observer::Transaction.commit
     Scheduler.worker(true)
 
@@ -143,6 +143,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
     assert_equal(1, NotificationFactory::Mailer.already_sent?(ticket1, agent2, 'email'), ticket1.id)
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'application_server'
     ticket1 = Ticket.create(
       title: 'some notification test 2',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -168,7 +169,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     assert(ticket1)
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = true
     Observer::Transaction.commit
     Scheduler.worker(true)
 
@@ -180,6 +180,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
   test 'ticket notification - simple' do
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'application_server'
     ticket1 = Ticket.create(
       title: 'some notification test 3',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -205,7 +206,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     assert(ticket1, 'ticket created - ticket notification simple')
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = true
     Observer::Transaction.commit
     Scheduler.worker(true)
 
@@ -474,6 +474,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
     agent2.save
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'scheduler.postmaster'
     ticket1 = Ticket.create(
       title: 'some notification test - z preferences tests 1',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -498,7 +499,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     )
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = false
     Observer::Transaction.commit
     Scheduler.worker(true)
 
@@ -630,6 +630,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
     agent2.save
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'scheduler.postmaster'
     ticket4 = Ticket.create(
       title: 'some notification test - z preferences tests 4',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -654,7 +655,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     )
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = false
     Observer::Transaction.commit
     Scheduler.worker(true)
 
@@ -694,6 +694,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
     agent2.save
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'scheduler.postmaster'
     ticket5 = Ticket.create(
       title: 'some notification test - z preferences tests 5',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -718,7 +719,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     )
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = false
     Observer::Transaction.commit
     Scheduler.worker(true)
 
@@ -758,6 +758,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
     agent2.save
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'scheduler.postmaster'
     ticket6 = Ticket.create(
       title: 'some notification test - z preferences tests 6',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -783,7 +784,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     )
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = false
     Observer::Transaction.commit
     Scheduler.worker(true)
 
@@ -835,6 +835,7 @@ class TicketNotificationTest < ActiveSupport::TestCase
     agent2.save
 
     # create ticket in group
+    ApplicationHandleInfo.current = 'scheduler.postmaster'
     ticket7 = Ticket.create(
       title: 'some notification test - z preferences tests 7',
       group: Group.lookup(name: 'TicketNotificationTest'),
@@ -860,7 +861,6 @@ class TicketNotificationTest < ActiveSupport::TestCase
     )
 
     # execute object transaction
-    Rails.configuration.webserver_is_active = false
     Observer::Transaction.commit
     Scheduler.worker(true)