Dear All

I want to block email attachments upload on internet through different mail servers. My requirement is that no user can send email attachments from/to yahoo, hotmail, gmail etc. I have RHEL-5 and squid 2.7. I have applied the undermentioned ACL but it in vain
ACL is

acl fileupload req_mime_type -i ^multipart/form-data$
http_access deny fileupload.

Waiting for ur valuable reply

Regards