[Mimedefang] mimedefang 3.3, filter_sender and md_dkim_verify()

[Bill Cole]

On 2023-04-21 at 17:47:59 UTC-0400 (Fri, 21 Apr 2023 17:47:59 -0400)
Ralph Hayon via MIMEDefang <mimedefang at lists.mimedefang.org>
is rumored to have said:

> Ok, thanks.
>
> If that is the case, how can I do the same with mimedefang ?
>
> Is there a way to easily extract the select fields I need from 
> INPUTMSG (sender, host, etc) after filter_begin()?

See the section  "GLOBAL VARIABLES SET BY MIMEDEFANG.PL" in the man page 
for mimedefang-filter.

The filter_begin() function (as well as later functions) is passed a 
MIME::Entity object as an argument. See "perldoc MIME::Entity" and 
"perldoc MIME::Head" for details of how to extract the whole header 
block and specific header values.

If you are more comfortable working directly with text, you also have 
access to the INPUTMSG and HEADERS files in the mimedefang working 
directory.


>
> Thanks.
>
> Ralph
>
> On 4/21/2023 4:56 PM, Dianne Skoll via MIMEDefang wrote:
>> On Fri, 21 Apr 2023 16:55:10 -0400
>> Ralph Hayon <ralph at naturalwireless.com> wrote:
>>
>>> To confirm, with mailmunge, md_dkim_verify() should properly work
>>> with filter_sender() since mailmunge is consistent for all 
>>> callbacks.
>> No.  You can't do any DKIM-checking until you have the message body 
>> and
>> that can't happen until filter_begin at the earliest.
>>
>> However, the way you get the sender is $ctx->sender in filter_sender,
>> filter_recipient, and filter_begin... the accessor is consistent 
>> across
>> all the callbacks.
>>
>> Regards,
>>
>> Dianne.
>>
>> _______________________________________________
>> NOTE: If there is a disclaimer or other legal boilerplate in the 
>> above
>> message, it is NULL AND VOID.  You may ignore it.
>>
>> MIMEDefang mailing list MIMEDefang at lists.mimedefang.org
>> https://lists.mimedefang.org/mailman/listinfo/mimedefang_lists.mimedefang.org
>
>
> -- 
> ***************************************
> Ralph Hayon
> Natural Wireless
>
> 60 Saddle River Ave, Unit B
> South Hackensack, New Jersey 07606
>
> email: 	ralph at naturalwireless.com
> www:	naturalwireless.com
>
> office: 201-438-2865 x 403
> fax:	201-438-1803
> cell: 	201-315-7397
>
>        Natural Wireless
> An Ultra Internet Service Provider
> ***************************************
>
>
> _______________________________________________
> NOTE: If there is a disclaimer or other legal boilerplate in the above
> message, it is NULL AND VOID.  You may ignore it.
>
> MIMEDefang mailing list MIMEDefang at lists.mimedefang.org
> https://lists.mimedefang.org/mailman/listinfo/mimedefang_lists.mimedefang.org


-- 
Bill Cole
bill at scconsult.com or billcole at apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
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