Email anti virus will not allow access to email attachments

Hello my friend,  Regarding on your problem, email has an antivirus that will scan all attached files before it sends to the sender. So that part of their security to ensure the safety of the data in their client. So i recommend that if you send some files over emai lmake it sure that the file you attached is virus free. You can scan it first in your compter before you can attached it in the email. Or avoid sending files.exe extension to avoid the block.
Hope this suggestion helps you to understand the reason why this things happen and able to help your problem solve.
If you need more assistance just reply to this post. thank you