503: PASS command must be preceded by USER

Explanation

The PASS command was entered to complete log on of a user ID on the server system, but the USER command has not been issued to specify which user ID to log in to. The USER command must be issued to specify the user ID before the PASS command can be issued.

System action

Login to the user ID on the server system is rejected. Control is returned to the client for further command processing.

User response

Issue the USER command to specify the user ID of the server system to log in to, then reissue the PASS command with the password or password phrase for this user ID.

System programmer response

None.