Re: [EXIM] logging data from pipes

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Author: Marc Haber
Date:  
To: exim-users
Subject: Re: [EXIM] logging data from pipes
On Wed, 29 Jul 1998 22:21:48 +0100 (BST), you wrote:
>On Wed, 29 Jul 1998, Marc Haber wrote:
>> I am using a virus scanner program that is invoked by a pipe, scans
>> the mail and re-invokes exim to do the delivery. That program does its
>> own logging and I would love to have an option to make exim do entries
>> in its logs. Preferably, these could be invoked with calls to exim
>> with command like parameters, a little bit like logger.
>
>This is very interesting. I am intrigued in what you are doing. Which
>virus scanner program are you invoking with a pipe? is it commercial or
>something youve written?


The pipe is invoking a perl script that tries to unpack and MIME, zip
and other archives and then applies the McAfee scanner on the results.
I am working on different scan programs since McAfee does not scan too
well.

>How did you bolt the scanner program into exim? I ask as I would like to
>do the same thing.


Actually, Sven Paulus did that for me, but it looks like this in exim
config:

|######################################################################
|#                      TRANPORTS CONFIGURATION                       #
|######################################################################
|#                       ORDER DOES NOT MATTER                        #
|#     Only one appropriate transport is called for each delivery.    #
|######################################################################
|
|virscan:

| driver = pipe
| bsmtp = all
| batch_max = 32767
| bsmtp_helo = true
| command = "/usr/local/virscan/bin/scanmail $sender_host_address /var/log/exim_virscan 1"
| current_directory = "/tmp"
| from_hack = false
| freeze_exec_fail = false
| group = virscan
| ignore_status = false
| log_defer_output = false
| log_fail_output = false
| log_output = true
| prefix =
| return_output = false
| return_path_add = false
| timeout = 6h
| umask = 022
| use_shell = false
| user = virscan

|
|
|######################################################################
|#                      DIRECTORS CONFIGURATION                       #
|#             Specifies how local addresses are handled              #
|######################################################################
|#                          ORDER DOES MATTER                         #
|#   A local address is passed to each in turn until it is accepted.  #
|######################################################################
|system_aliases:
|jahr2000_aliases:
|majordomo_aliases:
|userforward:
|vircheck:

|  condition = "${if or {{eq {$received_protocol}{no-attachment}} \
|                        {eq {$received_protocol}{local-not-scanned}} \
|                        {eq {$received_protocol}{scanned-ok}} \
|                        {match {$sender_host_address}{^192\.168\.10\.}}} \
|                 {0}{1}}"
|  driver = localuser
|  transport = virscan

|
|localuser:
|end
|
|######################################################################
|#                      ROUTERS CONFIGURATION                         #
|#            Specifies how remote addresses are handled              #
|######################################################################
|#                          ORDER DOES MATTER                         #
|#  A remote address is passed to each in turn until it is accepted.  #
|######################################################################
|
|vircheck:

| condition = "${if eq {$received_protocol}{scanned-ok} {0}{1}}"
| driver = domainlist
| route_list = "*"
| transport = virscan

|
|smarthost:
|
|end

The virus scanner scans the mail and re-delivers it with exim -oMr
scanned-ok to stop the mail from being scanned a second time.

Note: This will _not_ work with a stock exim-1.92, Phil had to send me
a patch to make this work. It took him actually 38 minutes :-)

Greetings
Marc

-- 
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Marc Haber          |   " Questions are the         | Mailadresse im Header
Karlsruhe, Germany  |     Beginning of Wisdom "     | Fon: *49 721 966 32 15
Nordisch by Nature  | Lt. Worf, TNG "Rightful Heir" | Fax: *49 721 966 31 29



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