In one embodiment, a translation gateway is for use between a network of a messaging service provider and a hostile data network. The gateway is to forward messages using a secure connection through the hostile network, to a customer's network. Different types of inbound messages (e.g., voice; fax) can be delivered to a single client process running on a customer machine on the customer network. In addition, the translation gateway may be used to securely forward different types of outbound messages originating from the client process to the service provider's network (where the messages are retransmitted as voice calls or facsimiles into a telephone network). Other embodiments are also described and claimed.