On Sun, 2003-09-21 at 19:15, Joe wrote:
Kevin Waterson wrote:
Can it be done without installing 3rd party software?
It can be easily done using postfix v2 from rawhide and adding a line of
text 2 main.cf and creating the file mime_header_checks with contents
shown below:
in main.cf:
mime_header_checks = regexp:/etc/postfix/mime_header_checks
in mime_header_checks:
/^\s*Content-(Disposition|Type).*name\s*=\s*"?(.+\.(lnk|asd|hlp|ocx|reg|bat|c[ho]m|cmd|exe|dll|vxd|pif|scr|hta|jse?|sh[mbs]|vb[esx]|ws[fh]|wav|mov|wmf|xl))"?\s*$/
REJECT Attachment type not allowed. File "$2" has the unacceptable
extension "$3"
Can a similar reject message be generated through the use of procmail ?
I think it's possible, but it would have to be done as an email message
back to the sender rather than as a rejection, since by the time
procmail gets the message, the system has already accepted it.
Rejecting it during the smtp connection uses less cpu cycles, and is
more straightforward to implement.