Article ID: 122912, created on Sep 16, 2014, last review on Sep 23, 2014

  • Applies to:
  • Plesk 12.0 for Windows
  • Plesk 11.5 for Windows


Unable to send and receive emails using Mailenable, despite of activity logs shows that emails were delivered to/(sent from) server:

2014-09-16 17:54:06 SMTP-IN 868 MAIL MAIL+FROM:<>+SIZE=1528 250+Requested+mail+action+okay,+completed DSVR017441 43 51  
2014-09-16 17:54:06 SMTP-IN domain.tld 868 RCPT RCPT+TO:<mail@domain.tld> 250+Requested+mail+action+okay,+completed DSVR017441 43 45


MTA settings were changed or configured manually.


  1. Check the registry settings for the MTA Mailenable service. In the command line, type:

    reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Mail Enable\Mail Enable\Agents\MTA" | findstr Pick

    You will receive output as below:

    Pickup Event Enabled    REG_DWORD    0x1
    Pickup Event Timeout    REG_DWORD    0xea60
    Pickup Event Command Enabled    REG_DWORD    0x0
    Pickup Event Class Name    REG_SZ    pleskmemta.PleskMEMTA
    Pickup Event Class Enabled    REG_DWORD    0x1
    Pickup Event Command    REG_SZ    
  2. If the output is different, please correct the MTA service settings in the registry (Start > Run > regedit.exe) as shown above.

  3. Restart Mailenable services.

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