This page last modified: Oct 27 2010
keywords:gmail,535,smpt,bounce,email,auth,authentication description:Fixing a 535 smtp auth failed error in Gmail title:535 smtp auth fix The key is this error message that is part of the bounce back: 535 SMTP AUTH failed with the remote server. (state 8). See these Gmail support threads: http://www.google.com/support/forum/p/gmail/thread?tid=4986b2de29ca8e4f&hl=en&fid=4986b2de29ca8e4f0004939e193d20e5 http://www.google.td/support/forum/p/gmail/thread?tid=08a60ebf5db24f7b&hl=en Cause: either Google or your SMTP gateway has lost authentication (lost your password), or you changed your password in the account you are using for "send mail as". Solution: In my case I changed my "Send mail as" user name from "mst3k@virginia.edu" to "mst3k". Prior to today there was no problem with the old user name. I have not change my password. There is no apparently change at the virginia.edu mail servers, but it is possible that something changed at virginia.edu. Here are the exact steps to fix this problem, starting in Gmail: click "Settings" click "Accounts and Imports" scroll to "Send mail as" click "edit info" for the account in question a dialog box pops up click "next step" check your user name click "Edit your password" enter password click "save changes" Google will immediately try your user name and password. There will be a red error message if the authentication didn't work.