+.vitem &%avast%&
+.cindex "virus scanners" "avast"
+This is the scanner daemon of Avast version 1.1.7 and 1.1.6
+(as reported by "/bin/avast -v").
+You can get a trial version at &url(http://www.avast.com).
+This scanner type requires one option,
+either a full path to a UNIX socket,
+or host and port specifiers separated by white space.
+The host may a name or an IP address; the port is either a
+single number or a pair of numbers with a dash between.
+Any further options are given, on separate lines,
+to the daemon as options before the main scan command.
+For example:
+.code
+av_scanner = avast:/var/run/avast4/local.sock:FLAGS -fullfiles:SENSITIVITY -pup
+av_scanner = avast:192.168.2.22 5036
+.endd
+If you omit the argument, the default path
+&_/var/run/avast4/local.sock_&
+is used.
+If you use a remote host,
+you need to make Exim's spool directory available to it,
+as the scanner is passed a file path, not file contents.
+
+