As of 21:05 CEST, new antivirus patterns are available to detect the w32.nimda.a@mm worm. Please run a System and Pattern Up2Date to include protection against this worm in the ASL SMTP proxy.
# .filter eml-files
acl worm urlpath_regex -i .eml$
http_access deny worm
and then stop and restart the HTTP proxy in WebAdmin.
The original article/video can be found at w32.nimda.a@mm