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Resolving “queue file size limit exceeded” email errors in Adobe Commerce

Last update: Mon Jan 13 2025 00:00:00 GMT+0000 (Coordinated Universal Time)

Handling large email attachments in Adobe Commerce Cloud can sometimes result in errors like “queue file size limit exceeded,” disrupting email functionality. This article outlines the causes of this issue and provides actionable steps to resolve it, ensuring smooth email operations within the Adobe Commerce environment.

Description description

Environment

Adobe Commerce Cloud

Issue/Symptoms

Email functionality within the Adobe Commerce Cloud environment may encounter issues when handling large attachments. This can result in failures to send or receive confirmation emails or notifications. Typical symptoms include warnings in the mail.log indicating issues with email processing:

Dec 19 16:41:10 <hostname> postfix/cleanup[ ID] : warning: <warnId>: queue file size limit exceeded
Dec 19 16:41:10 <hostname> postfix/cleanup[ ID] : warning: incoming/<warnId>: unexpected EOF in data, record type 78 length 72
Dec 19 16:41:10 <hostname> postfix/pickup[ ID] : warning: maildrop/<warnId>: error writing <messageId>: queue file write err

Resolution resolution

  • Ensure that outgoing email attachments comply with system size limitations.
  • For larger files, use alternative methods instead of relying on Sendgrid to handle email attachments.
  • Regularly review system logs for postfix mail errors, especially warnings about queue limits or unexpected EOF data records.
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