> -----Original Message-----
> From: Dan Muey [mailto:dmuey@infiniplex.com]
> Sent: Thursday, August 28, 2003 2:22 PM
> To: exim-users@???
> Subject: [Exim] Deny Messages with certain file extensions
>
> Howdy Exim group!
>
> I'm was looking over the thread about stopping sobig, and I'd like to
> simply deny messages with certain file extensions attached to them to
stop
> any virus. Since I'm such an Exim newbie I'm wondering if I am
> implementing this properly/going about it properly/understanding the
> principles involved and if this will work on messages coming in to
> accounts on the Exim server or email being sent out by accounts on the
> exim server or both.
>
> In my Exim4 conf file I have ::
>
> acl_smtp_data = check_message
>
> ...
> --- current check_message ---
> #!!# ACL that is used after the DATA command
> check_message:
> require verify = header_sender
> accept
>
> --- will this change to check_message cause attachments with those
> extensions to be denied? ---
> #!!# ACL that is used after the DATA command
> check_message:
> require verify = header_sender
>
> deny message = contains $found_extension file (blacklisted).
> demime =
>
ade:adp:bas:bat:chm:cmd:com:cpl:crt:exe:hlp:hta:inf:ins:isp
>
:js:jse:lnk:mdb:mde:msc:msi:msp:mst:pcd:pif:reg:scr:sct:shs
>
:shb:url:vb:vbe:vbs:wsc:wsf:wsh:ADE:ADP:BAS:BAT:CHM:CMD:COM
>
:CPL:CRT:EXE:HLP:HTA:INF:INS:ISP:JS:JSE:LNK:MDB:MDE:MSC:MSI
>
> :MSP:MST:PCD:PIF:REG:SCR:SCT:SHS:SHB:URL:VB:VBE:VBS:WSC:WSF:WSH
>
> accept
Yes, that's what you want to do. I'm not sure if you need the upper-case
versions, off the top of my head I don't know if that test is case
sensitive or not.
-Steve
