552 5.6.0 Headers Too Large 32768 Max: A Comprehensive Guide

Introduction

Error 552 560 "Headers too large 32768 max" is an SMTP email error code indicating that the email's headers exceed a specific size limit. This error can be encountered when sending emails through Microsoft Office 365 or other email platforms.

Causes of Error 552 560

The primary cause of error 552 560 is:

Exceeding the maximum header size limit: Email headers contain various information about the email, such as the sender, recipient, subject, and routing information. If the combined size of these headers surpasses the limit, the email will be rejected.

Resolving Error 552 560

• Reduce the number of recipients: Large email lists can contribute to header size. Consider sending emails to smaller groups or using a bulk email service.
• Remove unnecessary attachments: Attachments can significantly increase the header size. Consider using alternative methods to share large files, such as file-sharing services or cloud storage.
• Simplify the email body: Excessive formatting, images, or embedded objects in the email body can also contribute to header size. Try to keep the email body concise and plain text.
• Contact your email provider: If you're unable to resolve the issue on your own, contact your email provider for assistance. They may be able to adjust the header size limit or provide alternative solutions.

Additional Tips

• Use a header analyzer tool: Online tools can help analyze email headers and identify potential issues.
• Check for email loops: An email loop occurs when an email is repeatedly sent back and forth between multiple recipients, which can increase the header size. Ensure email addresses are correct and avoid forwarding emails with multiple recipients.
• Consider using an email template:Templates can help reduce header size by standardizing email content and removing unnecessary formatting.
• Stay updated on email standards: Email standards are constantly evolving. Stay informed about the latest updates to ensure compliance and avoid potential header-related issues.