Oh, OK. I'll investigate and test it.
Thank you!
--
[email protected]
Take a hippopotamus to lunch today.
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On Tue, Aug 1, 2023 at 12:24 PM aki.tuomi via dovecot <[email protected]>
wrote:
> 1.2.3.4::::::::: nopassword
>
> I think. Didn't have a chance to test it.
>
> Aki
>
>
> -------- Original message --------
> From: Hippo Man <[email protected]>
> Date: 8/1/23 19:03 (GMT+02:00)
> To: "aki.tuomi" <[email protected]>
> Cc: [email protected]
> Subject: Re: Forcing imap authentication failure for certain IP addresses
>
> Thank you very much!
>
> In your example, what would be the contents of the
> /etc/dovecot/deny.ip file?
>
> --
> [email protected]
> Take a hippopotamus to lunch today.
>
> .---------, 0__0
> / ( oo'---,
> / oo\
> ,\ |
> | \ ,=__/
> \ /
> / /------| /|
> |__|-' |__|'
>
>
>
> On Tue, Aug 1, 2023 at 11:44 AM aki.tuomi via dovecot <[email protected]>
> wrote:
>
>> One way is to use
>> https://doc.dovecot.org/configuration_manual/authentication/auth_policy/
>>
>> or you can use
>>
>> passdb {
>> driver = passwd-file
>> deny = yes
>> args = username_formar=%{rip} /etc/dovecot/deny.ip
>> }
>>
>> or you can use
>> https://doc.dovecot.org/configuration_manual/authentication/lua_based_authentication/
>>
>> and write this in Lua.
>>
>> Aki
>>
>>
>> -------- Original message --------
>> From: Hippo Man <[email protected]>
>> Date: 8/1/23 18:14 (GMT+02:00)
>> To: [email protected]
>> Subject: Forcing imap authentication failure for certain IP addresses
>>
>> I'm running dovecot 2.3.18 under Debian 11.
>>
>> I want to do something that's a bit unusual: when IMAP connections are
>> attempted
>> from a few specific IP addresses, I want to force an IMAP authentication
>> failure
>> from those connections, no matter what user ID and password are specified.
>>
>> I know that I can use iptables to completely block imap access from those
>> IP
>> addresses to the IMAP ports. However, in these specific cases, I'd prefer
>> that
>> the connection goes through to dovecot, but for dovecot then to always
>> generate
>> authentication failures for those specific connections ... even if a valid
>> user ID and password happen to be specified.
>>
>> Is there a way to do this in dovecot?
>>
>> Thank you very much in advance.
>>
>> --
>> [email protected]
>> Take a hippopotamus to lunch today.
>>
>> .---------, 0__0
>> / ( oo'---,
>> / oo\
>> ,\ |
>> | \ ,=__/
>> \ /
>> / /------| /|
>> |__|-' |__|'
>>
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