vBulletin SMTP Authorization Failed

[ramesh_umk3]

The mailing function returned an error while trying to send the mail.
The following errors were outputted by PHP when attempting to send mail:

PHP User Warning: 535 Authorization to the SMTP server failed in ..../includes/class_mail.php on line 716

even using after correct SMTP details when i run diagnosis i get above error can any one tell me what is that warning ..

thanks

[webmastersun]

Check your server and email configs

or you can need to re-install your web services.

Which web control panel are you using?

[Stratis]

Hope you didn't forget to check in settings as desired, TLS or SSL.