Do not load all settings to process.env

packages/rocketchat-lib/server/functions/settings.coffee

@@ -147,14 +147,17 @@ RocketChat.settings.init = ->
 	RocketChat.models.Settings.find().observe
 		added: (record) ->
 			Meteor.settings[record._id] = record.value
-			process.env[record._id] = record.value
+			if record.env is true
+				process.env[record._id] = record.value
 			RocketChat.settings.load record._id, record.value, initialLoad
 		changed: (record) ->
 			Meteor.settings[record._id] = record.value
-			process.env[record._id] = record.value
+			if record.env is true
+				process.env[record._id] = record.value
 			RocketChat.settings.load record._id, record.value, initialLoad
 		removed: (record) ->
 			delete Meteor.settings[record._id]
-			delete process.env[record._id]
+			if record.env is true
+				delete process.env[record._id]
 			RocketChat.settings.load record._id, undefined, initialLoad
 	initialLoad = false

packages/rocketchat-lib/server/startup/settings.coffee

@@ -91,10 +91,10 @@ RocketChat.settings.addGroup 'API', ->
 
 
 RocketChat.settings.addGroup 'SMTP', ->
-	@add 'SMTP_Host', '', { type: 'string' }
-	@add 'SMTP_Port', '', { type: 'string' }
-	@add 'SMTP_Username', '', { type: 'string' }
-	@add 'SMTP_Password', '', { type: 'string' }
+	@add 'SMTP_Host', '', { type: 'string', env: true }
+	@add 'SMTP_Port', '', { type: 'string', env: true }
+	@add 'SMTP_Username', '', { type: 'string', env: true }
+	@add 'SMTP_Password', '', { type: 'string', env: true }
 	@add 'From_Email', '', { type: 'string', placeholder: 'email@domain' }
 
 	@section 'Invitation', ->