DirectAdmin's SPAM Filters can block messages containing a word or phrase in the subject or body. These are domain-level filters, not settings for just one mailbox. For the separate Hosted Email service, use that service's Spam controls instead.
Add a stop-word filter
- Select the intended domain in DirectAdmin.
- Open E-mail Manager → SPAM Filters.
- Choose the stop-word option, enter a specific word or phrase and select Block.
- Check the configured action for matching messages. Prefer moving them to the spam folder while testing instead of silently dropping them.
Do not assume that a short entry matches only a complete word, or that surrounding spaces reliably enforce word boundaries. Test your exact rule with harmless messages. Broad terms such as free, credit or urgent can also appear in legitimate mail.
Review or remove a rule
Review the spam folder and ask affected senders for a test message if legitimate mail disappears. Delete the specific rule from the filter list if it is too broad. Messages previously dropped by the filter are not restored merely by removing the rule.
