62988

Mailbox unavailable. The server response was: 5.7.1 Client does not have permissions to send as this sender

A test email sent to the Default Help Desk produces the error:

FrameworkException
Mailbox unavailable. The server response was: 5.7.1 Client does not have permissions to send as this sender

Module:System.Net.Mail.MailCommand
Method:CheckResponse

Call Stack
Deltek.Framework.SysEmail.Server.Message.SendEmail(fromEmail As String, fromName As String, sToList As String, sCCList As String, sBCCList As String, sSubject As String, sBody As String, aFiles As String, vTextBody As String, replyTo As String)System.Net.Mail.SmtpClient.Send(message As MailMessage) 

Cause:   

Email has been configured to send mail from a Default Sender, but the user who is sending the email does not have SendAs rights to send mail as that Default Sender.

Resolution:

1. In Vision, click Configuration > General > System Settings and select the Email tab.
   • The Default Sender must be a valid email address
   • If using the Prefix for the Default Sender, the prefixes of Deltek_ and DeltekAdmin_ will be appended to the Default Sender name.
   • If using TLS, a valid username and password must also be entered in order to authenticate.

2. For Exchange (or Office 365), create the prefixed email addresses such as Deltek DefaultSender@company.com and DeltekAdmin_DefaultSender@company.com   These must be valid email addresses.
   • Add delegate rights (SEND AS rights) for the email address of each user who will be sending mail from Vision.