Non, je n'ai pas besoin d'une solution (je partage des informations seulement)
Customers not currently on Symantec Messaging Gateway 10.5.4 or later are strongly advised to update by December, 31st 2015, to continue to receive updates past January 2016.
For more information, please see https://support.symantec.com/en_US/article.ALERT1868.html?