app/controllers/messages_controller.rb

@@ -17,7 +17,7 @@
         @message.from = "test@#{domain.name}"
       end
     end
-    @message.subject = "Test Message at #{Time.now.to_s(:long)}"
+    @message.subject = "Test Message at #{Time.zone.now.to_s(:long)}"
     @message.plain_body = "This is a message to test the delivery of messages through Postal."
   end

app/models/incoming_message_prototype.rb

@@ -95,7 +95,7 @@ class IncomingMessagePrototype
           :content => attachment[:data]
         }
       end
-      mail.header['Received'] = "from #{@source_type} (#{@ip} [#{@ip}]) by Postal with HTTP; #{Time.now.rfc2822.to_s}"
+      mail.header['Received'] = "from #{@source_type} (#{@ip} [#{@ip}]) by Postal with HTTP; #{Time.now.utc.rfc2822.to_s}"
       mail.to_s
     end
   end

config/postal.dev.yml

+web:
+  host: localhost:5000
+  protocol: http
+
+fast_server:
+  bind_address: 0.0.0.0
+  port: 5001
+  ssl_port: 5002
+
+main_db:
+  username: root
+
+logging:
+  stdout: true
+
+message_db:
+  username: root
+
+rabbitmq:
+  username: guest
+  password: guest
+  vhost: /
+
+smtp_server:
+  port: 2525
+
+rails:
+  environment: development
+  secret_key: 58e93bbe3773facec4758b49c693f48dee388b07af0d84927bb9733f939abaacf8b44f6298a5d2e96339d0f2478ec6d0b6b1c656d469a2bac4d6f4b69368870c

lib/postal/smtp_server/client.rb

@@ -326,7 +326,7 @@ module Postal
         @headers = {}
         @receiving_headers = true
-        received_header_content = "from #{@helo_name} (#{@hostname} [#{@ip_address}]) by #{Postal.config.dns.smtp_server_hostname} with SMTP; #{Time.now.rfc2822.to_s}".force_encoding('BINARY')
+        received_header_content = "from #{@helo_name} (#{@hostname} [#{@ip_address}]) by #{Postal.config.dns.smtp_server_hostname} with SMTP; #{Time.now.utc.rfc2822.to_s}".force_encoding('BINARY')
         if !Postal.config.smtp_server.strip_received_headers?
           @data << "Received: #{received_header_content}\r\n"
         end