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 [AM4PEPF00027A65.eurprd04.prod.outlook.com 2024-02-18T15:44:27.230Z 08DC2DC9CB61DDBA]