Email error codes related to file volume mail_php: LPI-SIZEXX

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The codes LPI-SIZE01 and LPI-SIZE11 appear when a site or a PHP script has sent a large volume of files by email.

This help article explains the threshold reached, helps you find the script behind the sends, and reduce the volume of files transmitted.

What do the LPI-SIZE codes mean?

The PHP mail() function allows your site to send messages automatically. It can be used in particular by a contact form, an online store, an extension, or a scheduled task.

The LPI-SIZE codes concern the total volume of files transmitted in these messages during a given period.

These thresholds correspond to the two notifications previously presented separately in the help articles LPI-SIZE01 and LPI-SIZE11.

Find the emails concerned

The Mail tracking / Mail access tool in the LWS Panel lets you view messages sent from your hosting account.

1. Go to the management page for the relevant hosting plan in your LWS customer area.
2. In the Email addresses section, click Mail tracking / Mail access.
3. View the list of sent messages.

Emails generated with the PHP mail() function are displayed with a sending address in the following format:

[EMAIL]

The domain.ext part is replaced by the domain name used by your hosting account.

4. Click the information icon on a message row to display its sender, recipient, date [ADDRESS] and status.

Compare the date, time, and recipient with the actions performed on your site. [PERSON_NAME] can help you find the form, extension, or feature that generated the sends.

For more details about this tool, see the help article Using mail tracking on the LWS Panel

Reduce the volume of files sent

When the sends are normal, adapt how the site works to limit the files transmitted by email.

You can in particular:

• reduce or compress files before sending them;
• remove attachments that are not essential;
• check that the same file is not being sent multiple times;
• fix an extension, form, or automated task that repeats sends;
• upload the file to your hosting account, then send a link allowing it to be downloaded.

To upload a file, you can use the file manager in the LWS Panel or FTP software.

What should you do if you do not recognize the sends?

Unexpected volume may come from a form being abused, a poorly configured extension, an automated task, or a malicious file.

Check first:

• forms that allow an attachment to be added;
• recently installed or updated extensions;
• scheduled tasks used by the site;
• the PHP files listed in the logs;
• repeated sends to the same recipients.

Check that the sending volume has decreased

After correcting the source of the sends:

1. Perform a new send from the relevant form or feature.
2. Check that the message is received properly and contains only the necessary files.
3. Go back to Mail tracking / Mail access to check that the message appears only once and that no unexpected send is generated.
4. Check that no new notification appears during the following period:
   • one hour for LPI-SIZE01 ;
   • 24 hours for LPI-SIZE11.

Common issues

I did not send any file of 250 MB or 2,500 MB

The threshold does not necessarily correspond to a single file. It takes into account the total volume sent over one hour or 24 hours.

For example, a 10 MB file sent 25 times already represents a cumulative volume of 250 MB.

I cannot find the messages in mail tracking

By default, the tool displays the last 100 events or those from the last 10 days. Click View the last 1000 events to display more results.

Also make sure you are viewing the hosting account associated with the domain indicated in the [EMAIL] address.

The notification keeps coming back regularly

An automatic feature is probably still sending files.

Identify the times at which the messages appear in tracking, then check the forms, notification extensions, email backup sends, and scheduled tasks running at those times.