add wildcard email account backup exclusion

Author: asessa

bin/v-backup-user

@@ -390,7 +390,7 @@ if [ ! -z "$MAIL_SYSTEM" ] && [ "$MAIL" != '*' ]; then
         accounts=()
         for account in $(ls); do
             exclusion=$(echo "$MAIL" |tr ',' '\n' |grep "$domain:")
-            exclusion=$(echo "$exclusion" |tr ':' '\n' |grep "^$account$")
+            exclusion=$(echo "$exclusion" |tr ':' '\n' |grep -E "^$account|\*")
 
             # Checking exlusions
             if [ -z "$exclusion" ] && [[ "$MAIL_SYSTEM" =~ exim ]]; then