[Mailman-Users] Problem with outlook.com

We have a problem with some Outlook users who on the list return this error:

Error: ‎550 5.6.0 CAT.InvalidContent.Exception: ExchangeDataException, Decoding of header Subject failed+ADs- raw value: +AFs-Ens+AF0- +AD0-?eucgb2312+AF8-cn?q?An+AD0-A8+AD0-A4lisis+AF8-i+AF8-adequaci+AD0-A8+AD0-AE?+AD0-; cannot handle content of message with InternalId 3332894626847, InternetMessageId

There are Outlook users who, with the same subject, send the email correctly and everyone receives it, but there are others who get this error.