Article ID: 115175, created on Nov 21, 2012, last review on Jun 12, 2016

  • Applies to:
  • Plesk for Windows


  1. Unable to add a new mailbox:

    Error: Unable to update the mail account
    properties:MEAOPO.Mailbox.AddMailbox failed for name=test and domain [] (Error code 1)
  2. %plesk_bin%\mchk.exe utility for the domain fails with the same error:

    MEAOPO.PostOffice.AddPostOffice failed for name
    There are many error in the event manager:
    Event Type:     Error
    Event Source:   mailmng.exe
    Event Category: None
    Event ID:       1
    Date:           11/20/2012
    Time:           11:06:22 AM
    User:           N/A
    Computer:       THISPC
    MEAOPO.Mailbox.AddMailbox failed for name=test and domain
       at (MailEnable::MailEnableMailName::MailEnableMailName line 25)
       at execute console command --add-mailname(vconsoleapp::start line 129)
       at execute C:\Plesk\/admin/bin/mailmng --add-mailname "" "--mailname=test"
  3. The mailbox is present in MailEnable, but it is not fully configured and its status is disabled.

  4. All emails are bouncing from the mailbox.


There are two possible causes:

  1. MailEnable Prevent simple passwords security policy is enabled. This prevents passwords from being set for the mailbox along with the mapped email address.

  2. MailEnable configuration is broken.


  1. In the MailEnable Administration console, navigate to Servers > localhost

  2. Right-click on localhost and access Properties

  3. Go to the Policies tab. If it is absent, contact Plesk technical support. If it is present, proceed to the following steps:

  4. Disable Prevent simple passwords option

  5. Rebuild the mail configuration:

    "%plesk_bin%\mchk.exe" --all --fix=all 

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