Domino limitation whith CXF web service?

An xpages application I'm developing consumes a web service that stores files that are attached to an xpages in a repository. To do this I call an agent developed in Java, whose client to consume the web service was created from the framework APACHE CXF. Files up to 2.5 MB are stored without problems in the repository, however larger files the web service gives the error below. I did the same procedure consuming the web service through Eclipse and the error did not happen for files larger than 2.5 MB. Does anyone know if the problem is related to some Domino server configuration? Can it be a communication problem between the Domino server and the server where the repository resides? Has anyone had an analogous problem?

Java.io.IOException: Error writing to server

I'm working with Domino 8.5.3 and created the code to consume the web service from the wsdl2java utility of the APACHE framework CXF.