Outlook in Exchange 2010 block msg and eml attachments

Can you try below updates.

https://support.microsoft.com/en-us/help/3191938/descriptionofthesecurityupdateforoutlook2013june13,2017
https://support.office.com/en-us/article/Fixes-or-workarounds-for-recent-issues-in-Outlook-for-Windows-ecf61305-f84f-4e13-bb73-95a214ac1230

Try this free tool to check what are the attachments blocked

https://www.howto-outlook.com/products/outlooktools.htm

To Satish Auti
Hi, thanks, but these solutions are for Outlook 2013 only? My Outlook version is 2010

To Pradiip Singh
Hi, thanks, but i forgot to write that I tried Outlook tools, but in its parameters there aren't eml and msg extensions flag; this software pratically write in those keys that I modify directly in Windows Registry like this procedure

https://support.microsoft.com/it-it/help/829982/outlook-blocked-access-to-the-following-potentially-unsafe-attachment

I set the Level1Remove value like ".msg;.emal" bu it doesn't work; I hope that only one solution isn't to upgrade Outlook to newer version

Thanks, bye

To Satish Auti
You're Great Satish....very very thanks; I tried on 2007 and works very well; I'll try soon on 2010 version

Very very thanks again

Bye

My Pleasure.  Glad to help you out!!!!!!!