Unable to use print management to send invoice as pdf

Hi all,

I would like to send automatically via email a pdf invoice to my customers.

I setup Print management to be able to print and send an invoice as a PDF to a customer. However when trying to post the invoice , the system fails to do so. what do i missing?

error Message is here: No connection could be made because the target machine actively refused it

any help will be appreciated


your setup is OK,but you have no access to IP address: on Port:25.you need to contact an Internet Engineer of your company; is a loopback address; please change the configuration to point to an SMTP server.