diff --git a/src/mail.js b/src/mail.js
index 0beab0517..5122c13f2 100644
--- a/src/mail.js
+++ b/src/mail.js
@@ -553,7 +553,7 @@ async function getStatus(domain) {
     if (!mailDomain) throw new BoxError(BoxError.NOT_FOUND, 'mail domain not found');
 
     // mx/dmarc/dkim/spf/ptr: { expected, value, name, domain, type, status } }
-    // rbl4: { status, ip, servers: [{name,site,dns}]}
+    // rbl4/rbl6: { status, ip, servers: [{name,site,dns}]}
     // relay: { status, message } always checked
     const results = {};