Hello, I could not find anything that stated either way as to whether or not it was compatible with Groupwise 6. However, Groupwise is using the same API gateway that it has used in previous versions...so I would expect it to work!?
I did set things up as per the knowledge base article, however, I used the Novell client. Thanks, Garrett List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm