SNS topic subscription issues.

Amazon Simple Notification Service SNS is a powerful tool for message publishing and delivery across distributed systems, but even with its simplicity, users can face problems with topic subscriptions that block important alerts or updates

In this blog post, we will explain common issues with SNS topic subscriptions and how Informatix Systems helps businesses resolve them efficiently

Common SNS Topic Subscription Issues

Subscription Confirmation Not Received
This often occurs when endpoints do not acknowledge the subscription confirmation request Common with HTTPS email and Lambda endpoints

Message Delivery Failures
Messages may fail due to endpoint misconfiguration, firewall rules, or unsupported protocols

Invalid Endpoint Format
Incorrect input of endpoint values, such as a wrong email or an unsupported URL format, will prevent a successful subscription

Permissions Issues
If the topic policy does not allow the endpoint to subscribe or receive messages, the subscription will fail silently

Missing or Expired Token
Subscription confirmation links or tokens may expire or be blocked by email filters

How Informatix Systems Can Help

Informatix Systems offers expert services for diagnosing and resolving AWS SNS subscription problems. We help you

• Confirm endpoint configurations and validate token-based subscriptions

• Review and update topic access policies

• Troubleshoot delivery logs and protocol-specific issues

• Test and verify message delivery across all subscription types

• Provide ongoing monitoring and alerts for critical topics

Our AWS-certified team ensures your SNS workflows run smoothly and deliver messages reliably across systems

Frequently Asked Questions

Why is my SNS subscription not confirmed
If the endpoint did not click the confirmation link or blocked the request the subscription will remain pending

Can I resend the confirmation message?
Yes, you can use the AWS CLI or SDK to resend the subscription confirmation

What types of endpoints are supported by SNS
SNS supports HTTP,  email email JSON, SMS, Lambda, SQS, S, and mobile push notifications

How can I monitor failed deliveries?
You can enable delivery status logging for each protocol and set up CloudWatch metrics

Get in Touch

Facing SNS subscription problems or delivery failures? Get expert help from Informatix Systems

Website: https://informatix.systems
Email: support@informatix.systems
Phone: +8801524736500