A method, system and computer program product for dynamically modifying target server specifications to improve the success rate of client requests in a data network. A client's initial request is transmitted by a client router to a dynamically updating target server, based on information in a client's routing table. A Dynamic Server Specifications (DSS) utility automatically revises one or more target specifications of a client's request that is not initially fulfilled. The DSS utility then initiates the transmission of the modified request to an alternate server. If the request to the alternate server is also not fulfilled, the DSS utility may further modify the request to target an arbitrary server in order to download a current routing table. When the client receives a current routing table, the initial request is revised based on the current routing information, with full constraints re-established, and forwarded to the relevant target server.