Yes, there is a option in WHM->Tweak settings from which you can limit users to send emails from their domains.
| Thread starter | Similar threads | Forum | Replies | Date |
|---|---|---|---|---|
| T | Limiting email per domain - two different methods? | 1 | ||
| F | Limiting Email Usage. | 0 | ||
|
limiting emails sent per hour | 6 | ||
| T | Rate limiting outgoing email for users | 3 | ||
| F | Limiting sending emails | 0 |