Message not delivered

Your message couldn't be delivered to lander@hec.fr because the remote server is misconfigured. See technical details below for more information.

The response from the remote server was:

554 5.4.14 Hop count exceeded - possible mail loop ATTR34 [DB1PEPF000509EC.eurprd03.prod.outlook.com 2024-02-29T14:30:55.481Z 08DC3390BDB813B6]