I get a "Relay access denied" error when sending email from Outlook
Modified on: Fri, 27 May, 2016 at 7:14 PM
This is generally an authentication problem. To stop just anyone from using your mailserver to send spam, we require users to authenticate when they try to send email.
Check the outgoing server authentication by doing the following:
Open the Account settings dialogue. In Outlook 2010 or 2013, it's on theFile tab, in Outlook 2007 and prior it's in theTools menu.
Double click on the appropriate email account.
Click More Settings
Choose the Outgoing server tab and check the authentication settings. You should have My outgoing server (SMTP) requires authentication ticked and Use the same settings as my incoming mail server selected.