What Do I Do If the Connection Timed Out?

Symptom

Pods can be created, but the message "[Errno 110] Connection timed out" is displayed when the Python Django SMTP service is used to send emails.

Possible Cause

You have purchased only ELB but not NAT Gateway. Therefore, containers can be accessed only from the external network. Containers can access the external network after you purchase a NAT Gateway.
Port 25 is prohibited from sending messages to secure the network environment.

Solution

Solution 1: Use the NAT Gateway service to enable container instances (pods) in a VPC to access public networks. The NAT Gateway service provides source network address translation (SNAT), which translates private IP addresses to a public IP address by binding an elastic IP address (EIP) to the gateway, providing secure and efficient access to the Internet. For details, see Accessing Public Networks from a Container.
Solution 2: Contact technical support to allow port 25 of your new EIP.

Parent topic: Network Management FAQs

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