Block a sender domain in DirectAdmin when you no longer want messages from addresses at that domain. These SPAM Filters affect the selected domain's mailboxes, not just one mailbox.
Add the filter
- Select the receiving domain in DirectAdmin.
- Open E-mail Manager → SPAM Filters.
- Choose Domain, enter the unwanted sender domain, and select Block.
- Check whether matching messages are sent to the spam folder or dropped. Test the rule before relying on it.
Enter a domain name, not a URL. For a sender such as offers@mail.example.com, the sender domain is mail.example.com. Do not remove labels automatically or assume a parent-domain rule covers every subdomain; test the exact sender you intend to block.
Avoid blocking legitimate mail
A rule for a shared provider such as gmail.com can block unrelated senders you need. Prefer a specific-address filter when only one sender is unwanted.
Remove a rule from the filter list if it blocks wanted messages. Deleting the rule does not recover mail that was already dropped. Hosted Email customers should use their service's Spam tab instead of DirectAdmin.
