diff --git a/mayordomo/__init__.py b/mayordomo/__init__.py
index 84fd453..b84d901 100644
--- a/mayordomo/__init__.py
+++ b/mayordomo/__init__.py
@@ -131,8 +131,8 @@ async def enviarCorreosDominio(dominioid):
 					try:
 						
 						if dkimKey is not None:							
-							mail2send = Parser(policy=default).parsestr(carta.contenido)						
-							signature = dkim.sign(carta.contenido.encode('utf-8'), b'mayordomo', b'ilab.cl', dkimKey, include_headers=[b'from', b'to', b'subject', b'message-id']).decode().replace("\r\n",'')
+							mail2send = Parser(policy=default).parsestr(carta.contenido.encode('utf-8'))						
+							signature = dkim.sign(mail2send.as_bytes(), b'mayordomo', b'ilab.cl', dkimKey, include_headers=[b'from', b'to', b'subject', b'message-id']).decode().replace("\r\n",'')
 
 							await log.info("DKIM-Signature: {}".format(signature[len("DKIM-Signature: "):]))