Currently I am using Ivy for dependency management. And quite often I come across problem of getting identical jar files with different name due to transitive dependency.

Example:

<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.4</version>
</dependency>

<dependency>
    <groupId>org.apache.geronimo.specs</groupId>
    <artifactId>geronimo-javamail_1.4_spec</artifactId>
    <version>1.4</version>
</dependency>

I am thinking of trying out Maven as well.

Any best practice to eliminate these identical artifact in either Ivy or Maven?