Hi, I've heard that making over 4 or 5 posts per days may be recognized as automatic or spaming website that is not looks naturally in the eyes of SE. So, how do SEs consider forums and other site where hundreds or even thousands new topics (100% human made) are posted per day?
Make it irregular instead of a fixed number will help too. But i think it's more important that your post has good content. If you just post junk and spam, it will get picked up eventually too.