What are common reasons AutoModerator removes posts automatically?

AutoModerator is a flexible, rule-based bot that subreddit moderators configure using a YAML-based specification. Because each community writes its own rules, the exact triggers vary, but several categories of removal reasons appear consistently across Reddit. Karma and account age thresholds are among the most common triggers. Many communities configure AutoModerator to automatically remove posts or comments from accounts that do not meet a minimum karma score or have been created within the past several days or weeks. This is the leading cause of automatic removal for new users. Banned words or phrases in post titles or bodies account for another large category. Moderators add terms that have historically attracted rule-breaking content — spammy phrases, slurs, promotional language like "check out my" or "buy now," or keywords associated with content the community prohibits — to an AutoModerator blocklist. A single match triggers removal. Spam link patterns work similarly: AutoModerator can be configured to remove any post containing a link to a specific domain, a category of domains, or any link at all. Missing or incorrect flair is a common auto-removal trigger in communities that require post flair. If flair is mandatory and a user submits without it, AutoModerator removes the post and sends a message directing the user to resubmit with the appropriate label. Some communities require specific title formats — square brackets around a category tag at the start of the title, for example — and auto-remove any title that does not match the expected pattern. Account-level signals can also trigger removal: unverified email addresses, previously banned accounts, or a negative combined karma score. Reddit's own automated systems can override community AutoModerator settings if an account is flagged as a potential spammer or spam bot, resulting in removal across all subreddits regardless of community-specific configuration. Finally, posting too frequently in a short time window can trigger AutoModerator's rate-limiting rules, even when each individual post would pass on its own. Many communities configure a minimum interval between submissions from the same account, preventing flooding from both automated bots and overly enthusiastic human posters. If you receive an auto-removal after submitting several posts in quick succession, timing is worth considering as a possible cause.