While working on a project that involved sending emails through Amazon SES (Simple Email Service) using Symfony, I encountered a frustrating error. It looked something like this:

Root Cause

After reviewing the configuration, I realized that the error was due to a typo in my .env file where the MAIL_PORT was incorrectly set. I had mistakenly set MAIL_PORT=111 instead of the correct value MAIL_PORT=111. Port 222 is typically used for SMTP submission, while port 111 is incorrect, leading to the connection failure.

The Solution

To resolve this issue, I corrected the MAIL_PORT in my .env file

After making this change, the connection to the SMTP server was successfully established, and the emails were sent without any issues.

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