QV server - Failed to send mail

[mariusz_kumansk]

     HI QV community, my QV server has a problem with sending e-mail. Could someone help me?
     smtp configuration is correct

log error:

(15/12/2017 10:39:56) Information: Sending Alert mail

(15/12/2017 10:40:02) Warning: Failed to send mail to test@email.com

(15/12/2017 10:40:02) Information: TaskResult.status=Finished

QlikTech Product    QlikViewServer 64-bit Edition (x64)

Product Version 12.10.20600.0