Add option to convert password to use ASCII instead of Unicode when needed by smtp server config (#5793)

frappe/email/doctype/email_account/email_account.json

@@ -170,7 +170,38 @@
    "set_only_once": 0, 
    "translatable": 0,
    "unique": 0
-  }, 
+  },
+  {
+    "allow_bulk_edit": 0,
+    "allow_on_submit": 0,
+    "bold": 0,
+    "collapsible": 0,
+    "columns": 0,
+    "fieldname": "ascii_encode_password",
+    "fieldtype": "Check",
+    "hidden": 0,
+    "ignore_user_permissions": 0,
+    "ignore_xss_filter": 0,
+    "in_filter": 0,
+    "in_global_search": 0,
+    "in_list_view": 1,
+    "in_standard_filter": 0,
+    "label": "Use ASCII encoding for password",
+    "length": 0,
+    "no_copy": 0,
+    "permlevel": 0,
+    "precision": "",
+    "print_hide": 0,
+    "print_hide_if_no_value": 0,
+    "read_only": 0,
+    "remember_last_selected_value": 0,
+    "report_hide": 0,
+    "reqd": 0,
+    "search_index": 0,
+    "set_only_once": 0,
+    "translatable": 0,
+    "unique": 0
+  },
   {
    "allow_bulk_edit": 0,
    "allow_on_submit": 0, 
@@ -1421,7 +1452,7 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2018-05-25 22:43:24.606771",
+ "modified": "2018-07-06 01:01:01.606771",
  "modified_by": "Administrator", 
  "module": "Email", 
  "name": "Email Account", 

frappe/email/smtp.py

@@ -171,7 +171,10 @@ class SMTPServer:
 		if self.email_account:
 			self.server = self.email_account.smtp_server
 			self.login = getattr(self.email_account, "login_id", None) or self.email_account.email_id
-			self.password = self.email_account.password
+			if self.email_account.ascii_encode_password:
+				self.password = frappe.safe_encode(self.email_account.password, 'ascii')
+			else:
+				self.password = self.email_account.password
 			self.port = self.email_account.smtp_port
 			self.use_tls = self.email_account.use_tls
 			self.sender = self.email_account.email_id