Failed to send notification to email addresses: <organization email>: 535 Authentication failed


I was trying to send test email alert to my organization email address and getting this error in grafana
“Failed to send test alert.: failed to send notification to email addresses: : 535 Authentication failed”

I have updated the SMTP section as below

enabled = true
host = organizationsmtphostadddress
user = organizationemailaddress
password = organizationemailpassword
cert_file =
key_file =
skip_verify = true
from_address = organizationemailaddress
from_name = Grafana
ehlo_identity =

can someone please help me with this issue??

can someone please help ?