Fix typo that causes aliases in lists to bounce

https://forum.cloudron.io/topic/2890/bug-with-mailing-lists-that-point-to-aliases

src/mail.js

@@ -1322,7 +1322,7 @@ function resolveList(listName, listDomain, callback) {
                     if (entry.type === mailboxdb.TYPE_MAILBOX) { // concrete mailbox
                         result.push(member);
                     } else if (entry.type === mailboxdb.TYPE_ALIAS) { // resolve aliases
-                        toResolve = toResolve.concat(`${entry.aliasName}@${entry.aliasTarget}`);
+                        toResolve = toResolve.concat(`${entry.aliasName}@${entry.aliasDomain}`);
                     } else { // resolve list members
                         toResolve = toResolve.concat(entry.members);
                     }