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r/CMMC rules, stats, and what to post

A source-backed Rankhog guide to r/CMMC: public rules, community context, posting fit, and startup-promotion risk before you publish.

Members
12,698
Community age
Created Oct 2019, 7 years
To post
No minimum in the rules
To comment
No minimum in the rules
Self-promotion
Allowed with conditionsVendors cannot directly advertise unless they bring original content that adds value and get a moderator exception.
Links
Allowed with conditionsAllowed only when the poster provides context and the external content provides value to the community.
Promo risk
HighFrom the rules, not from removal counts

Checked October 22, 2026 from the community's public Reddit pages:

Check a post for r/CMMC

By Anthony Riera, founder and operator of Rankhog.

Subreddit guides combine public Reddit source URLs, captured rules, visible verification dates, and Rankhog's account-safety workflow.

Rule summary

  • Keep it professional: Keep it professional. This doesn't need further explanation.
  • Complaints: This subreddit is not a democracy, it is a dictatorship. If you don't like the rules please send your complaints to the DoD CIO.
  • No Direct Advertising, With Exception: Vendors are not permitted to directly advertise themselves. That means, no posts linking to your company blog or soliciting the business of community members. Vendors are encouraged to engage with the community, and are advised to use a soft touch when mentioning their services. There will be occasional exceptions to this rule made by the moderation team WHEN: A vendor brings an original content post that adds value to the community.
  • DM'ing members: Vendors are prohibited from directly DM'ing people unsolicited. Any vendor found DM'ing people directly with "Hey I can do this for you, what's your email" will be banned.
  • No Unexplained Blogs or External Content: Blog posts, clickbait articles, youtube videos and other external content is only allowed when the poster provides context, and the external content provides value to the community. Low effort clickbait will result in an immediate ban. Please keep your "2 Easy Steps for Total Compliance" articles to your mailing lists.
  • 6. No AI slop: Put in the work and actually write your thoughts without having AI do the work for you

Works well

  • A detailed, original post offering guidance on navigating a specific CMMC control requirement.
  • A discussion thread asking for professional input on how a CMMC control applies to a niche industry.
  • Sharing a high value external resource about CMMC, provided you write a thorough explanation of its relevance.
  • A thoughtful comment offering professional advice in response to another member's compliance question.

Avoid

  • Posting a direct link to your company blog to solicit business from members.
  • Sending unsolicited private messages to members pitching your services or asking for their email.
  • Sharing external content like articles or videos without providing clear context and explaining its value.
  • Submitting posts or comments that appear to be generated by artificial intelligence.
  • Posting low effort clickbait articles about CMMC compliance.

What r/CMMC Is For

This community is for members seeking information, guidance, and assistance for meeting the new DoD CMMC rating guidelines. It is a professional space where people discuss how to achieve CMMC compliance.

Rules That Matter Before Posting

The rules that decide whether a marketing adjacent post survives are “No Direct Advertising, With Exception”, “DM'ing members”, “No Unexplained Blogs or External Content”, and “No AI slop”.

What To Post

A good post here looks like original content that adds value to the community, such as a detailed analysis of a specific CMMC requirement. If you share external content, you must always provide clear context and explain why it is valuable to the community. If you are a vendor, you should engage softly and avoid pitching your services in public posts.

What To Avoid

You must avoid directly advertising your company or linking to your company blog to solicit business. You must also avoid sending unsolicited direct messages to members pitching services. Additionally, you must not post clickbait or external content without providing context and demonstrating value. Finally, you must not use AI to generate your posts or thoughts.

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Common questions about r/CMMC

Can I post about my company's services here?

Vendors cannot directly advertise or solicit business, but they are encouraged to engage softly if they bring original content that adds value and get a moderator exception.

Is sharing a blog post or external resource okay?

External content is only allowed if you provide context and the content provides value to the community. Low effort clickbait will result in an immediate ban.

What if I want to reach someone privately to discuss CMMC?

Vendors are prohibited from directly DM'ing people unsolicited. Any vendor found DM'ing people directly with a pitch will be banned.

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