Hi Dave,
This looks useful. I don't see any docs on $authenticated_lookup. I
assume it returns true if auth succeeds?
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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