Hi,

I am using DNN 5.6.0 (community edition) and have an installation with only one portal. I configuered the SMTP settings in host portal as follows:

Server: (my SMTP server address)
Authentication: Standard
SSL: no
Username/Password: (my credentials)

When I click on the link "Test" in the host settings to send a test mail everything works fine.

But when I do something in my portal, for example registering a new user, I get the following error message in the log viewer of my portal:

DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: d662a120-c716-488d-ab5a-1c34739a6b40
InnerException: Falsche Befehlsfolge. Die Serverantwort war: This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Net.Mail.RecipientCommand.CheckResponse
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Falsche Befehlsfolge. Die Serverantwort war: This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server. ---> System.Net.Mail.SmtpException: Falsche Befehlsfolge. Die Serverantwort war: This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server. bei System.Net.Mail.RecipientCommand.CheckResponse(SmtpStatusCode statusCode, String response) bei System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, SmtpFailedRecipientException& exception) bei System.Net.Mail.SmtpClient.Send(MailMessage message) bei DotNetNuke.Services.Mail.Mail.SendEmail(String fromAddress, String senderAddress, String toAddress, String subject, String body) bei DotNetNuke.Services.Mail.Mail.SendMail(UserInfo user, MessageType msgType, PortalSettings settings) bei DotNetNuke.Entities.Modules.UserModuleBase.CompleteUserCreation(UserCreateStatus createStatus, UserInfo newUser, Boolean notify, Boolean register) bei DotNetNuke.Modules.Admin.Users.ManageUsers.UserCreateCompleted(Object sender, UserCreatedEventArgs e) --- Ende der internen Ausnahmestapelüberwachung ---

I don't know the exact words of the english exception message. "Falsche Befehlsfolge" would mean something like "wrong order of commands".

If it never worked, there could be a problem using that mailserver, but why does it work when using "Test", but not when using portal mails.

When I do a "Test" in host settings after having tried to register a new user, I get both mails, the "new user" and the "test".

Had anyone of you the same problem? How can I solve it?

Thanks in anticipation for any help or hint!

--
Greetings from Germany

Martin

Hi, Matt,

thank you very much for your reply! The podcast helped much in understanding DNN mail configuration.

But I found the solution myself: The problem was, that I had no real mail account in my domain, all mail addresses were only forwards to another address. Now I created a real mail account and used the login for that account in my DNN SMTP settings. Otherwise only mails from *@mydomain.de to *@mydomain.de could be sent.

Thanks again for your help!
--
Greetings from Germany

Martin