A new mod to fight spam is installed. This mod checks every new posts/replies for possible spam. Unfortunately as anything else it's not perfect. There is a chance that your post/reply can be falsely flagged as spam.
In case your post got flagged as spam:
1) DO NOT worry, it will be unflagged shortly (the same day at most).
2) DO NOT attempt send same message again with slight modifications in hope to by-pass the filter (it might create confusion after messages got unflagged)
3) DO NOT PM moderators/administrators
4) DO NOT start new topic regarding your flagged message.
Current version of the mod does not allow forum moderators moderate flagged messages, that means the unflagging process might have lag. Hopefully it will change soon.