var configuration = new MapperConfiguration(config => {
    // Only effective for maps created directly from config
    config.RecognizePostfixes("Id");
    config.AddProfile<SomeProfile>();
});

class SomeProfile : Profile
{
    public SomeProfile ()
    {
        // One would have to uncomment this line for "Id" postfixes
        // to be recognized while mapping from Source to Destination
        //config.RecognizePostfixes("Id");
        CreateMap<Source, Destination>();
    }

}