SMTP configuration

#################################### SMTP / Emailing ##########################
[smtp]
enabled = true
host = "........:25"
;user =
;password =
;cert_file =
;key_file =
skip_verify = true
from_address = *******.com
from_name = Grafana

this is my configuration when I set up my email ID I received the alerts but if I go with this email I do not receive the alerts and the test says the alert is sent successfully. is there a solution to my problem?