Hi, I was hoping someone could shed some advice. I'm hosting an application here at Winhost and we are trying to email from an email hosted at Rackspace. This was the error: Transaction failed. The server response was: 5.7.1 <[email protected]>: Sender address rejected: Access denied And these were the site credentials we use. The Winhost support team suggested I follow up here and see if anyone has any prior experience with this. They suggested it is possible to mail "from" a rackspace server. SMTP: mail.mysite.com, also tried smtp.emailsrvr.com Login: [email protected] Password: mypassword Port: 25 Instructions for rackspace: http://www.rackspace.com/apps/support/portal/1088
Have you tried to contact Rackspace about this. If you are trying to send email through their email server there maybe a setting you are not aware of with Rackspace.