---
title: What should I do if SMPP messages aren’t delivering?
description: "If messages fail, check your bind status (active?), DLT compliance (registered templates?), and recipient number format (E.164, e.g., +919876543210). Test connectivity with Telnet—if it’s down, fix network issues. Review error codes in DLRs via our **SMS gateway**—our [SMPP connectivity guide](https://www.smsgatewaycenter.com/smppConnectivity/)…"
url: "https://www.smsgatewaycenter.com/blog/kb/what-should-i-do-if-smpp-messages-arent-delivering/"
updated: "2025-02-26"
category: Bulk SMS / SMPP
---

# What should I do if SMPP messages aren’t delivering?

If messages fail, check your bind status (active?), DLT compliance (registered templates?), and recipient number format (E.164, e.g., +919876543210). Test connectivity with Telnet—if it’s down, fix network issues. Review error codes in DLRs via our **SMS gateway**—our [SMPP connectivity guide](https://www.smsgatewaycenter.com/smppConnectivity/) helps decode them. Contact support if needed (+91-9619 141 191) for quick resolution.

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- [Why do I get a “Connection Timed Out” error with SMPP?](https://www.smsgatewaycenter.com/blog/kb/why-do-i-get-a-connection-timed-out-error-with-smpp/)
- [What’s the throughput limit for SMPP connections?](https://www.smsgatewaycenter.com/blog/kb/whats-the-throughput-limit-for-smpp-connections/)

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