Docs Error Library Email Delivery Errors Error 452-4.5.3: Domain policy size per transaction exceeded

Error 452-4.5.3: Domain policy size per transaction exceeded

What Is Causing This Error?

This error often occurs when the email you’re trying to send exceeds the limit set by the recipient’s email server or your domain’s policy.

It can happen either due to the size of the email itself or attempting to send emails to a large recipient list.

If your email has large attachments or too many recipients, you’ll likely encounter the ‘Error 452-4.5.3’ issue.

Resolving the Error – Solution

To resolve this error, you’ll need to check that you aren’t sending emails with large attachments. You may try hosting large attachments on a cloud server and sharing the link to the file instead.

Alternatively, we suggest optimizing and compressing file attachments before including them in your email.

If having too many recipients causes the error, we suggest splitting them and sending the email in batches. This ensures you are within the maximum number of email recipients set by your email service providers.

You could also consider using an email service that lets you set up a mailing list and send emails in bulk to your users.

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: