Re: [exim] Authentication Failure Question

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Autor: Marc Perkel
Data:  
A: Dave Restall - System Administrator,,,
CC: exim-users
Assumpte: Re: [exim] Authentication Failure Question
Here are my authenticators:

dovecot_plain:
driver = dovecot
public_name = PLAIN
server_socket = /var/run/dovecot/auth-client
server_set_id = $auth1

dovecot_login:
driver = dovecot
public_name = LOGIN
server_socket = /var/run/dovecot/auth-client
server_set_id = $auth1

How would I add something like server_condition that would let me do
something on a failed login?



On 6/5/2013 11:01 AM, Dave Restall - System Administrator,,, wrote:
> Hi Marc,
>
>> Is there a way for an ACL to do something on authentication failure? I'm
>> trying to trap the IP addresses of hackers trying to guess passwords.
>>
>> Thanks in advance
> Have a look at acl_smtp_auth. I also use an extended or condition on the authentication :-
>
> ....
>
>     server_condition                =       ${if or {${authenticated_lookup} {${perl{Run_A_PERL_SCRIPT_HERE}}}}}

>
> My actual condition is a bit more complicated but the above serves
> to illustrate.
>
> It basically says if the authenticated lookup succeeds, then continue
> if it fails then run the perl script. You can then do the processing
> with the perl script - I use it to count failed attempts and log them
> to a file - it could quite easily be used to firewall IP addresses etc.
>
> Typical old fashioned shell script short circuit.
>
> Regards,
>
>
>
>
> D
> lists/exim/users/2013-06-05.tx                                 exim-users
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