A “Bind Failed” error indicates that your SMPP client is unable to establish a connection with the Cequens SMPP gateway. This is typically caused by misconfiguration or authentication issues.
To resolve it, please review the following possible causes:
Common Reasons for Bind Failure
| Issue | Description |
|---|---|
| Incorrect Hostname/IP | Ensure you're connecting to the correct SMPP host and using the exact domain or IP provided. |
| Incorrect Port Number | Cequens typically uses a port sent to you in the account creation form. Verify you're not using a restricted or blocked port. |
| Invalid System ID | Double-check the System ID (username) shared in the “Account Information” file. |
| Wrong Password | Use the service password, not your Cequens platform login credentials. |
| Blacklisted or Unauthorized IP | Make sure your IP address is whitelisted by Cequens. Unauthorized IPs cannot connect. |
| Inactive or Suspended Account | Your SMPP account must be active and in good standing. Contact support to confirm status. |
Important Notes
✅ Always refer to the “Account Information” file provided by our Customer Onboarding Team. This file includes:
SMPP gateway hostname/IP
Port number
System ID and password
TON/NPI settings
DLR configuration
Allowed sender ID policies
Do not use your web portal login password. The SMPP service password is separate and dedicated to your bind authentication.
Useful Verification Steps
Ping the SMPP Host:
Test Port Connectivity:
If this fails, it could be a firewall or network routing issue on your side.
Enable Debug Logs:
Turn on verbose/debug logs in your SMPP client to inspect the bind request and response details.
Still Not Working?
If you've verified all the above and are still receiving the error, please contact our support team and include the following:
Your System ID
Source IP address you're connecting from
Timestamp of the failed bind attempt
Full log or error message (if available)
Email: support@cequens.com
Support hours: 24/7 for technical critical issues