The default port for Outbound SMTP is port 25. However your Internet service provider may be blocking outbound SMTP on that port.
Outbound SMTP is supported the following ports:
| Outgoing SMTP Server: | outbound.mailhop.org |
|---|---|
| SMTP Port: | 25 (default), 2525, or 10025 |
| SMTPS (SSL/TLS): | 587 or 465 (default) or 10465 |