diff --git a/mayordomo/__init__.py b/mayordomo/__init__.py
index a7dcc30..502a49d 100644
--- a/mayordomo/__init__.py
+++ b/mayordomo/__init__.py
@@ -132,12 +132,12 @@ async def enviarCorreosDominio(dominioid):
 						
 						if dkimKey is not None:							
 							mail2send = Parser(policy=default).parsestr(carta.contenido)						
-							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",'')
+							signature = dkim.sign(mail2send.as_string(), b'mayordomo', b'ilab.cl', dkimKey, include_headers=[b'from', b'to', b'subject', b'message-id']).decode().replace("\r\n",'')
 
 							mail2send['DKIM-Signature'] = signature[len("DKIM-Signature: "):]
-							await log.info("Mail: \n {}".format(mail2send.as_bytes()))
+							await log.info("Mail: \n {}".format(mail2send.as_string()))
 							
-							await smtp.sendmail(remitente.direccion, rcpt_to, mail2send.as_bytes())
+							await smtp.sendmail(remitente.direccion, rcpt_to, mail2send.as_string())
 							
 						else:	
 							await smtp.sendmail(remitente.direccion, rcpt_to, carta.contenido.encode('utf-8'))