According to Wikipedia, the definition "varies according to the traditions and aims of those following it", which makes it difficult to cover in a single blog post. Perhaps unsurprisingly for a practice which originates in a living religion, there are many different traditions. From the Renaissance onwards Jewish Kabbalah was studied by non-Jews, which led to the absorption and adoptions of the ideas found there. The main article splits off into separate Kabbalistic traditions, including Christian Cabala and Hermetic Qabalah, two of the resulting practices which developed independently of the source.
Wikipedia also states that it was through these non-Jewish associations that Kabbalah became linked with occult practices that were forbidden in Judaism itself - apart from to an elite few through the method of theurgic Practical Kabbalah.
The entry for Practical Kabbalah states that it's the appeal to an occult power other than God which is unacceptable to Judaism - however there is no such restriction on understanding the past, "or coming to a greater understanding of present and future situations", possibly through dreams.
Christian Cabala declined during the Enlightment, and the article doesn't contain any mention of divination at all. The entry for Hermetic Qabalah suggests that this flourished in the Western mystery tradition (although a citation is needed) and became a central component of Western occult magic.
None of the articles suggest anything about the methods of divination involved in these traditions, other than dreams.