This seems to be only for the Enterprise edition. The "free" Team edition should not have this limit:

https://github.com/mattermost/mattermost/issues/34271#issuec...

Also one of the comments:

> Would be a shame if someone with too much time on their hands dug into the binary and added a few zeroes to the message limit

Can this be done via some binary-patch tool? Really curious. It would save recompile efforts.

edit: link

edit 2: I just realized, their Ubuntu repository only contains the Enterprise edition labeled "Free edition". This is really confusing. I does look like entishitification has started long ago: https://docs.mattermost.com/deployment-guide/server/deploy-l...