Lỗi không add được job, instance employment

Lỗi như sau khi thực hiện add instance employment.

SMTP sendMail failed (server :0).  Cannot send email to HCMGENUser1@ap6023fems.us.oracle.com;peoplesoft@ldapudtest.com. (80,2)

An error occurred during the SMTP session.  Verify that the SMTPSender is a valid e-mail address (e.g. someone@somewhere.com).  In addition, verify that the recipients of the e-mail have valid e-mail addresses.