Hi,

I'm having a trouble with smtp configuration. I installed DNN on my webhosting, and I can't make it send mails correctly. When I try to recover a password (or the authentication email for new subscriptions) I get this error:

Mailbox name not allowed. The server response was: sorry, that domain isn't allowed to be relayed thru this MTA

There are a few wierd things about this. First when I test the SMTP configuration on the hosts config screen, the mail is sent succesfully. But when I try to recover passwords it will give me that error, except for accounts that are on my own domain. (someone@midomain.com works, someone@gmail.com fails.)

To put the icing over the cake, if I use this same account I configured in SMTP settings with www.mail2web.com the account works perfectly and I can send emails to any of the accounts I'm having trouble with.

I need to have the account creation as verified, or I will be hit into oblivion by spam bots, and I have tried everything (that includes googling the problem, obviously)  to correct this problem with no-joy. I accept any suggestions on how to squash this bug.

Thank you very much.

I'm using authentication on my smtp account, and if I do the test on the DNN SMTP configuration, it works correctly.

Please validate the email address of the Admin account, specified in site settings and make sure, the SMTP server account is granted to use releay feature of the server (using other domain sender and recipient).