What Is Causing This Error?
The primary cause for the ‘Error 452-4.5.3’ is exceeding the recipient limit in a single email or within a specific timeframe.
This limit varies depending on the email service provider or the configuration of the email server being used. For instance, Microsoft Exchange servers have a configurable limit for the maximum number of recipients per message.
Resolving the Error – Solution
To resolve ‘Error 452-4.5.3’, consider these steps:
- Split your recipient list: Divide large recipient groups into smaller batches to stay under the limit.
- Use mailing list features: Leverage your email client’s mailing list functionality to manage large sends.
- Employ SMTP services: Plugins like Easy WP SMTP for WordPress sites or services like SendLayer and SendGrid offer alternatives with higher or more flexible recipient limits.
- Adjust server settings: If you have access, increase the MaxRecipientsPerMessage on your server.
That’s it! Now you know how to troubleshoot and fix Error 452-4.5.3.
If you’d like to learn about other common errors, check out the following tutorials: