Docs Error Library Email Delivery Errors Error 452-4.5.3: Your Message Has Too Many Recipients

Error 452-4.5.3: Your Message Has Too Many Recipients

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.

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