Unable to receive emails in Mail Enable: The message could not be copied to … It has been bad mailed

Symptoms

• Emails are not delivered to Plesk with MailEnable mail server.

• It is not possible to send email from the server.

• The %plesk_dir%Mail ServersMail EnableQueuesSFOutgoingMessages folder is missing.

• In %plesk_dir%Mail ServersMail EnableLoggingSMTPSMTP-Debug-<date>.log is observed that the message was successfully delivered:

  ME-I0135: Authenticating User:[email protected] using Authentication Provider Credentials
  ME-I0108: [1112] Relay Granted: Sender has authenticated.
  ME-I0149: [1112] BD5904B9147A4A03A8CF83F8A4984598.MAI was received successfully and delivery thread was initiated

• The following is shown in %plesk_dir%Mail ServersMail EnableLoggingMTAMTA-Debug-<date>.log:

  ME-MTA-ERROR external Error: (Error 3) Message (AD9A862ABBBC418AA7D5EF5A4F805F6C.MAI) could not be transferred from [SMTP] Connector to [SF] Connector. The message could not be copied to C:pleskMail ServersMail EnableQUEUESSFOutgoingMessages537E8C53A44A4A35BA7DA0ABE8954191.MAI. It has been bad mailed.
  Debug 114: Message (AD9A862ABBBC418AA7D5EF5A4F805F6C.MAI) has been copied to the system BadMail directory

• In%plesk_dir%Mail ServersMail EnableQueuesSFOutgoingthere is a file called Messages, which is not a directory.

Cause

The email messages are being received on the server but bad mailed on their way between SMTP and MTA due to a missing directory.

Resolution

1. Connect to the server via RDP

2. Create the missing folder %plesk_dir%Mail ServersMail EnableQueuesSFOutgoingMessages as shown below: