Blocking a specific sender address with DirectAdmin email filters

Select the correct domain and understand the filter scope. DirectAdmin domain spam filters can affect multiple mailboxes; use a mailbox-specific webmail rule instead when only one user should be affected. Preserve a sample message and check that the address is not a legitimate shared contact.

1. Open E-mail Manager > SPAM Filters.
2. Choose the address or Email match type under the blocking control.
3. Enter the complete address, such as sender@example.com, without adding a display name or unrelated punctuation.
4. Review the configured handling of matched mail. Prefer a reviewable spam destination while validating the rule when that option is available. Add the rule and save.
5. Test with an authorized controlled message where practical and review subsequent mail. Keep the rule narrow rather than blocking a whole provider domain after one unwanted message.

Confirm matching unwanted mail follows the configured action while legitimate correspondents remain unaffected. Review the spam destination regularly during the initial period so a mistaken rule can be corrected.

If unwanted mail continues, compare the actual message headers and matching behavior instead of assuming the visible From name is the matched address. If important mail is blocked, remove the specific rule and retest. Already discarded mail may not be recoverable, so ask the sender to resend after the rule is corrected.

• Blocking a sender domain with DirectAdmin email filters
• Filtering email by a subject or message keyword in DirectAdmin
• Removing an unwanted DirectAdmin email filter
• Enabling account spam filtering in DirectAdmin

• DirectAdmin Evolution: Email