Reddit has a specific filter setting to prevent spam in your groups. If your dlvr.it posts are being mistakenly identified as Spam, you'll need to update those settings.
We are currently working toward allowing manual posts to Reddit. Stay tuned for more on this!
To update these settings:
1) Log into your Reddit account.
2) Click on your subreddit.
3) Click on Mod Tools
4) Click Community Settings
5) Click Posts and Comments
6) Update the necessary Spam filter setting