mail with .EXE attchmnt rejected silently. How to bounce it?

[Webcart]

Hello,

I just tried to send myself e-mail with .EXE attachment.
The e-mail wasn't delivered to the mailbox which is fine, but the sender wasn't notified.

I checked 'filters' section, but didn't find there a way to reject file attachments based on extension.

Please advise.

[ProWebUK]

What combination of software are you using?

exim
exim + spamassassin
mailscanner / ? / ?
? ? ?

Chris

[Webcart]

Originally posted by ProWebUK
What combination of software are you using?

exim
exim + spamassassin
mailscanner / ? / ?
? ? ?

Chris

The default install for FreeBSD 4.9.

[existenz]

I was looking at exim's config you can do it within the exim config but I am not 100% of the syntax. Possibly someone with my exim experience can help!

[DirectAdmin Support]

Hello,

The /etc/system_filter.exim file would be the culpret for filtering exe files. You can either change the filter settings (requires filter knowledge), or you can just disable the system_filter by editing the /etc/exim.conf and commenting out the "system_filter =" line with the # character.

John

[Webcart]

Originally posted by DirectAdmin Support
Hello,

The /etc/system_filter.exim file would be the culpret for filtering exe files. You can either change the filter settings (requires filter knowledge), or you can just disable the system_filter by editing the /etc/exim.conf and commenting out the "system_filter =" line with the # character.

John

I don't want to disable filters altogether, all I want is to have sender notified that the the mail was rejected rather than silently discard it.

Reading the forum, I get impression that this is default behaviour for others, I wonder if it doesn't work that way for me because I am running FreeBSD :)

[DirectAdmin Support]

Hello,

It *should* send out an error message. I know that with my ISP they just drop exe attachments before it even gets any further..

If the filter catches something, it then runs:

if $return_path is ""
then
seen finish
endif
fail text "This message has been rejected because it has\n\
potentially executable content\n\
\t$1\n\
This form of attachment has been used by\n\
recent viruses or other malware.\n\
If you meant to send this file then please\n\
package it up as a zip file and resend it."
seen finish
... so it checks to make sure there is someone to send to, then it sends the message. Just check your /var/log/exim/mainlog to see whats going on.

John

John

[Webcart]

Hello and thank you for your reply.

After noticing that mails sent to non-existent e-mail addresses do not bounce even though it's set up that way, I realized that it somehow connected with the initial set up.

I will add the resolution to my thread about installation problems at http://www.directadmin.com/forum/showthread.php?s=&threadid=1902