Hi all, I have an Exchange 2010 Sp2 RU5v2, when I use IE I can add digital signatures to messages. But with Firefox I see the option, how I can digitally sign messages from Firefox OWA in Exchange 2010? many Thanks Microsoft Certified IT Professional Server Administrator

Hi , Firefox is a third part product, we have no information for this product, its recommended to contact the third party products support service.Wendy Liu TechNet Community Support

Hi, thanks for answering. How Microsoft no way we could realiazar this with Firefox? I have many users who have PCs in linux and can not use IE. Is there any settings that can be made in the mail system? thanksMicrosoft Certified IT Professional Server Administrator

Hi , Firefox is a third part product, we have no information for this product, its recommended to contact the third party products support service.Wendy Liu TechNet Community Support

Hi This is OWA web browser supported list, S/MIME is only supported by IE, so I don't know if firefox has any changed to suppot OWA. Exchange Server Supportability Matrix: http://technet.microsoft.com/en-us/library/ff728623(v=exchg.141).aspxWendy Liu TechNet Community Support

Hi This is OWA web browser supported list, S/MIME is only supported by IE, so I don't know if firefox has any changed to suppot OWA. Exchange Server Supportability Matrix: http://technet.microsoft.com/en-us/library/ff728623(v=exchg.141).aspxWendy Liu TechNet Community Support