Mail sent to Postfix default accounts is routed to Plesk Administrator’s email

Symptoms

• When the mail service is enabled for a domain (i.e. example.com), the following email accounts are set up in Postfix by default:

  postmap -s /var/spool/postfix/plesk/virtual | grep @example1.com
  [email protected] [email protected]
  [email protected] [email protected]
  [email protected] [email protected]
  [email protected] [email protected]
  [email protected] [email protected]
  [email protected] [email protected]

• If an email message is sent to one of those email accounts (e.g. [email protected]), it gets forwarded to the email address that is set under the Plesk Administrator's Profile.

Cause

This behavior is by design: In the following output, it can be seen that all emails sent to the accounts mentioned (for example [email protected]) are forwarded to Plesk Administrator email address (for example [email protected]):

postmap -s /var/spool/postfix/plesk/aliases
drweb [email protected]
kluser [email protected]
postmaster [email protected]
root [email protected]
anonymous [email protected]
drweb-daemon [email protected]
ailer-daemon [email protected]
mailman [email protected]

Resolution

To change this behavior:

1. Connect to the server via SSH;

2. Modify /etc/aliases file to forward all messages from desired accounts to another mailbox (for example [email protected]).

   For instance, for the account [email protected], add the following line into the /etc/aliases file:

   root: [email protected]

3. Run the following command:

   # postalias /etc/aliases

4. Verify that the setting applied:

   # postmap -s /etc/aliases | grep root

Note: This will not affect accounts created in Plesk with the name [email protected], but if the mailbox does not exist then the message will be forwarded to [email protected] instead of the Plesk Administrator email address.