Article ID: 124903, created on Mar 18, 2015, last review on Jun 17, 2016

  • Applies to:
  • Plesk 12.0 for Linux
  • Plesk 11.0 for Linux
  • Plesk 11.5 for Linux


Unable to send an email to specific mailbox.

Getting below error message in /usr/local/psa/var/log/maillog:

    qmail-queue-handlers[21253]: from=mailbox1@domain1.tld
    qmail-queue-handlers[21253]: to=mailbox2@domain2.tld
    qmail-queue-handlers[21253]: handlers_stderr: DATA Mailbox full
    qmail-queue-handlers[21253]: DEFER during call 'check-quota' handler


Mail box is full or quota for specific mail account is reached.


  1. Go to Plesk > Subscriptions > Mail.

  2. Click on Refresh Usage Stats.

  3. If it is showing all quota used then it is needed to increase the mailbox quota or delete some emails from mailbox.

Additional information

More information how reject_mail_when_overquota works you can find in article #113755.

Search Words


handlers_stderr: DATA Mailbox full

DEFER during call 'check-quota' handler

a914db3fdc7a53ddcfd1b2db8f5a1b9c 56797cefb1efc9130f7c48a7d1db0f0c 01bc4c8cf5b7f01f815a7ada004154a2 29d1e90fd304f01e6420fbe60f66f838 0a53c5a9ca65a74d37ef5c5eaeb55d7f aea4cd7bfd353ad7a1341a257ad4724a 2a5151f57629129e26ff206d171fbb5f e335d9adf7edffca6a8af8039031a4c7

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