Mail Sent and Received but failure notice delivered

[badbandit83]

Hi,

I am having a problem with my e-mail server,

I have just installed everything succesfully on SuSE9.3 using the relevant docs posted on the net.

I use postfix for e-mails, and set accounts using ISPConfig, I can send and receive e-mails to the correct e-mail but also get over 50+ replies say that the mail is not delivered.

For instance if i send e-mail to adrian@example.com the mail send and receives correctly, but i also get delivery failure notices for web16_adrian@example.com

how do i fix this?

Thanks