I need help because Im in a big trouble. Im actually acting as a reseller, but from 2 mounths, my customer are having problems sending emails to any domain which is hosted under "servidoresdns.net". Message that my users get is "unrouteable mail domain [email protected]", and in the other side, when [email protected] tries to send an email to one of my customers, the [email protected] owner dont get no error message, simply notice that email was not delivered whet he ask to my customers by phone.

When I aks to my server technical service they told me that problem is located in destiny domain but exampledomain.com technical service tolds me that mistakes are taken place in my server.

Any Idea about it?.

Thank you in advance.