If Squirrel encounters any error while processing a mail account subscription, it will disable this document to prevent future error messages. The last error message is saved in the mail account subscription document and an HCL Notes email message is sent to the user to inform of the error. After the error has been corrected (e.g. wrong password), the mail account subscription document must be manually enabled again to resume the processing for this subscription. Other errors (e.g. connection timeouts) are reported on the console and the operation is retried at the next interval.