diff --git a/services/mailer/application/config.js b/services/mailer/application/config.js
index 23a3ed699..4c54025fb 100644
--- a/services/mailer/application/config.js
+++ b/services/mailer/application/config.js
@@ -2,26 +2,28 @@ require('require-yaml');
 const fs = require('fs-extra');
 const packageJson = require('../package.json');
 let configPath = `/etc/${packageJson.name}`;
-let nginxConfigPath = configPath;
 
-let env = process.env.NODE_ENV ? process.env.NODE_ENV : 'development';
+let config = require('./config/datasources.json');
+let configFiles = [
+    `${configPath}/datasources.json`,
+    `${configPath}/datasources.${env}.json`
+];
 
-if (env === 'development') {
-    configPath = `${__dirname}/config`;
-    nginxConfigPath = '../../nginx';
+for (let configFile of configFiles) {
+    if (fs.accessSync(configFile))
+        Object.assign(config, require(configFile));
 }
 
-let config = require(`${configPath}/datasources.json`);
-let configEnvFile = `${configPath}/datasources.${env}.json`;
+let proxyConf = require('../../nginx/config.yml');
+let proxyFiles = [
+    `${configPath}/config.yml`,
+    `${configPath}/config.${env}.yml`
+];
 
-if (fs.existsSync(configEnvFile))
-    Object.assign(config, require(configEnvFile));
-
-let proxyConf = require(`${nginxConfigPath}/config.yml`);
-let proxyEnvFile = `${nginxConfigPath}/config.${env}.yml`;
-
-if (fs.existsSync(proxyEnvFile))
-    Object.assign(proxyConf, require(proxyEnvFile));
+for (let proxyFile of proxyFiles) {
+    if (fs.accessSync(proxyFile))
+        Object.assign(proxyConf, require(proxyFile));
+}
 
 config.proxy = proxyConf;
 config.package = packageJson;