diff --git a/src/mail.js b/src/mail.js
index 8972272bb..30e1869b7 100644
--- a/src/mail.js
+++ b/src/mail.js
@@ -105,7 +105,7 @@ const assert = require('assert'),
     validator = require('validator'),
     _ = require('underscore');
 
-const DNS_OPTIONS = { timeout: 5000 };
+const DNS_OPTIONS = { timeout: 10000 };
 const REMOVE_MAILBOX_CMD = path.join(__dirname, 'scripts/rmmailbox.sh');
 
 const OWNERTYPES = [ exports.OWNERTYPE_USER, exports.OWNERTYPE_GROUP, exports.OWNERTYPE_APP ];