We are using DNN 7.3.4 and we are having problems with our emailing system.

Under Host - SMTP Settings we are using Basic Authentication with SSL enabled with a 3rd party smtp provider that is smtp.office365.com. When I test this mailbox, it works. The email is being sent to the mailbox with no problems. We also have Catalook which is using these credentials and the emails are relaying successfully to the user upon a purchase etc. 

User Admin/SMTP Settings, we use the "Host" mode. The test is successful for this as well. The Host email address is websites@ and the same is for the Admin (profile) and for the SMTP username.

However, when a new user is registered he will not receive an email, the host will not receive an email that a new user is registered either. When trying to reset the password for a user, the user is not receiving an email. When we switch to a verified registration, the verification email is not being sent at all. All other third party applications would still work. 

Here is what we have from the logfile:

2015-01-02 13:54:34,457 [id19903][Thread:32][ERROR] DotNetNuke.Services.Exceptions.Exceptions - System.Net.Mail.SmtpException: Mailbox unavailable. The server response was: 5.7.60 SMTP; Client does not have permissions to send as this sender

   at System.Net.Mail.DataStopCommand.CheckResponse(SmtpStatusCode statusCode, String serverResponse)

   at System.Net.Mail.DataStopCommand.Send(SmtpConnection conn)

   at System.Net.Mail.SmtpConnection.OnClose(Object sender, EventArgs args)

   at System.Net.ClosableStream.Close()

   at System.Net.Mail.MailWriter.Close()

   at System.Net.Mail.SmtpClient.Send(MailMessage message)

   at DotNetNuke.Services.Mail.Mail.SendMailInternal(MailMessage mailMessage, String subject, String body, MailPriority priority, MailFormat bodyFormat, Encoding bodyEncoding, IEnumerable`1 attachments, String smtpServer, String smtpAuthentication, String smtpUsername, String smtpPassword, Boolean smtpEnableSSL)

Any ideas?

 

 

Hi Chris. Yes, we do have nine admin accounts. The main administrator under Admin/Security Settings tab is "admin" (I have changed this after your post because previously that "main" admin had a different email address). This "admin" under his profile has websites@ email address. The same username is used now for the smtp.office365.com account. Do you think it conflicts with another admin's account since two admins are using this email address? Any other recommendations?
The error now we are getting is below. Please note that we are using Basic Authentication and we have enabled SMTP SSL.

2015-01-03 17:53:28,567 [id19903][Thread:34][ERROR] DotNetNuke.Services.Exceptions.Exceptions - System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM
at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response)
at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode)
at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception)
at System.Net.Mail.SmtpClient.Send(MailMessage message)

Awesome, great to hear!

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Chris Hammond
Former DNN Corp Employee, MVP, Core Team Member, Trustee
Christoc.com Software Solutions DotNetNuke Module Development, Upgrades and consulting.
dnnCHAT.com a chat room for DotNetNuke discussions