Error in email settings

Problem setting outgoing email settings in digitalocean.Please help me with this

Route

Form/Outgoing Email Settings
Error Report

Traceback (innermost last):
File “/home/frappe/frappe-bench/apps/frappe/frappe/widgets/form/save.py”, line 18, in savedocs
doc.save()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 183, in save
self.run_before_save_methods()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 437, in run_before_save_methods
self.run_method(“validate”)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 412, in run_method
return Document.hook(fn)(self, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 496, in composer
return composed(self, method, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 479, in runner
add_to_return_value(self, fn(self, *args, **kwargs))
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 406, in
fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/outgoing_email_settings/outgoing_email_settings.py”, line 29, in validate
sess = smtpserver.sess
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/email_lib/smtp.py”, line 99, in sess
(self.password or “”).encode(‘utf-8’))
File “/usr/lib/python2.7/smtplib.py”, line 578, in login
raise SMTPException(“SMTP AUTH extension not supported by server.”)
SMTPException: SMTP AUTH extension not supported by server.

Traceback (innermost last):
File “/home/frappe/frappe-bench/apps/frappe/frappe/app.py”, line 51, in application
response = frappe.handler.handle()
File “/home/frappe/frappe-bench/apps/frappe/frappe/handler.py”, line 66, in handle
execute_cmd(cmd)
File “/home/frappe/frappe-bench/apps/frappe/frappe/handler.py”, line 89, in execute_cmd
ret = frappe.call(method, **frappe.form_dict)
File “/home/frappe/frappe-bench/apps/frappe/frappe/init.py”, line 532, in call
return fn(*args, **newargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/widgets/form/save.py”, line 18, in savedocs
doc.save()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 183, in save
self.run_before_save_methods()
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 437, in run_before_save_methods
self.run_method(“validate”)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 412, in run_method
return Document.hook(fn)(self, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 496, in composer
return composed(self, method, *args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 479, in runner
add_to_return_value(self, fn(self, *args, **kwargs))
File “/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py”, line 406, in
fn = lambda self, *args, **kwargs: getattr(self, method)(*args, **kwargs)
File “/home/frappe/frappe-bench/apps/frappe/frappe/core/doctype/outgoing_email_settings/outgoing_email_settings.py”, line 29, in validate
sess = smtpserver.sess
File “/home/frappe/frappe-bench/apps/frappe/frappe/utils/email_lib/smtp.py”, line 99, in sess
(self.password or “”).encode(‘utf-8’))
File “/usr/lib/python2.7/smtplib.py”, line 578, in login
raise SMTPException(“SMTP AUTH extension not supported by server.”)
SMTPException: SMTP AUTH extension not supported by server.
Request Data

{
“type”: “POST”,
“args”: {
“doc”: “{"always_use_login_id_as_sender":1,"modified_by":"Administrator","name":"Outgoing Email Settings","footer":"
Sent via\n\tERPNext
","creation":"2015-03-27 11:05:13.570704","enabled":1,"modified":"2015-03-27 11:05:16.704891","doctype":"Outgoing Email Settings","use_ssl":0,"owner":"Administrator","docstatus":0,"__last_sync_on":"2015-03-28T05:09:19.591Z","__unsaved":1,"mail_server":"smtp.gmail.com","mail_login":"sanamqbics@gmail.com","mail_password":"*****"}”,
“action”: “Save”,
“cmd”: “frappe.widgets.form.save.savedocs”,
“_type”: “POST”
},
“freeze”: true,
“show_spinner”: true,
“url”: “/”
}
Response JSON

{
“_server_messages”: “["Unable to send emails at this time", "Did not save"]”
}

Check your email settings. What SMTP service are you using?