Not able to receive notification from mantisbt

[abdulk]

Hi,
I am not able receive email notification from my mantis bug tracker. in
configurtation file everything is correct.i am getting error in server log that
i mentioned below.


my config_inc.php configuration is ..

$g_log_destination = 'file:/home/evolvuss/public_html/support/merror.log';
$g_log_level = LOG_EMAIL | LOG_EMAIL_RECIPIENT;
$g_email_send_using_cronjob = OFF;

$g_display_errors[E_WARNING] = 'inline';
$g_display_errors[E_USER_WARNING] = 'inline';

$g_phpMailer_method = PHPMAILER_METHOD_SMTP;
$g_smtp_host = "smtp.gmail.com";
$g_smtp_port =587;
$g_smtp_username = "noreply@evolvussolutions.com";
$g_smtp_password = "xxxxxxx";
$g_smtp_connection_mode = "tls";
$g_administrator_email = 'noreply@evolvussolutions.com';
#$g_webmaster_email = 'test@evolvussolutions.com';
#$g_from_email = 'test@evolvussolutions.com';
$g_return_path_email = 'roshan.gaongerikar@evolvussolutions.com';
$g_view_changelog_threshold = "administrator";
$g_enable_project_documentation = "OFF";
$g_view_summary_threshold = "administrator";
$g_allow_signup = OFF;
#$g_email_receive_own = ON;
$g_enable_email_notification = ON;


This is server error log.
====
2016-03-03 08:15:46 dovecot_login authenticator failed for
royal.serverchamber.com (evolvussolutions.com) [167.114.126.65]:38175: 535
Incorrect authentication data (set_id=noreply@evolvussolutions.com)
2016-03-03 08:15:46 SMTP connection from royal.serverchamber.com
(evolvussolutions.com) [167.114.126.65]:38175 lost
2016-03-03 08:15:52 dovecot_login authenticator failed for
royal.serverchamber.com (evolvussolutions.com) [167.114.126.65]:38180: 535
Incorrect authentication data (set_id=noreply@evolvussolutions.com)
2016-03-03 08:15:52 SMTP connection from royal.serverchamber.com
(evolvussolutions.com) [167.114.126.65]:38180 lost
====

Please update