Recommended file name extensions exclusions for Windows antivirus programs on Exchange 2016 servers

In addition to excluding specific folders and processes, you should exclude the following Exchange-specific file name extensions in case folder exclusions fail or files are moved from their default locations. 

Extensions	Description	Servers
.config	Application-related extensions	Mailbox servers Edge Transport servers
.chk .edb .jfm .jrs .log .que	Database-related extensions	Mailbox servers Edge Transport servers
.dsc .txt	Group Metrics-related extensions	Mailbox servers
.cfg .grxml	Unified Messaging-related extensions	Mailbox servers
.lzx	Offline address book-related extensions	Mailbox servers