Re: [exim] DKIM and debian buster...

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著者: Marco Gaiarin
日付:  
To: Mike Tubby via Exim-users
CC: exim-users
題目: Re: [exim] DKIM and debian buster...
Mandi! Mike Tubby via Exim-users
In chel di` si favelave...

>> I'm used, in exim on debian stretch (4.89-2+deb9u7) add something like:
>>
>>       DKIM_CANON = relaxed
>>       DKIM_SELECTOR = 2020
>>       DKIM_DOMAIN = ${lc:${domain:$h_from:}}
>>       DKIM_PRIVATE_KEY = ${if exists{/etc/exim4/dkim/DKIM_DOMAIN-DKIM_SELECTOR-private.pem}{/etc/exim4/dkim/DKIM_DOMAIN-DKIM_SELECTOR-private.pem}{0}}

>>
>> to enable DKIM for selected 'from' addresses in my servers, using predefined
>> '.ifdef' in predefined debian transports.
>
> I think you can say:
>     DKIM_SELECTOR = "2020"
>     DKIM_PRIVATE_KEY = /etc/exim4/dkim/DKIM_DOMAIN-DKIM_SELECTOR-private.pem
> and Exim's business logic will get it correct, i.e. if it finds a key it
> will sign with it otherwise it wont attempt to sign.  The other thing is
> that your key needs to be readable by whatever UID/GID Exim is running as.


Seems true. Inserting simply:

    DKIM_CANON = relaxed
    DKIM_SELECTOR = 2020
    DKIM_DOMAIN = ${lc:${domain:$h_from:}}
    DKIM_PRIVATE_KEY = /etc/exim4/dkim/DKIM_DOMAIN-DKIM_SELECTOR-private.pem


now DKIM signatures get added, and so filenames are correct, as name and
permission, but now i got in paniclog:

    2020-07-08 00:50:52 1jswQN-0006Ml-18 unable to open file for reading: /etc/exim4/dkim/linux.it-2020-private.pem


where clearly 'linux.it' is for every non-local domains (better: for every
domain that doesnt have a DKIM key; i have a mailing list server on that
server, so also: for every user of one mailing lists that does not have a
DMARC strict policy ;).


So, i'm back with my original question. Why a macro:

    DKIM_PRIVATE_KEY = ${if exists{/etc/exim4/dkim/DKIM_DOMAIN-DKIM_SELECTOR-private.pem}{/etc/exim4/dkim/DKIM_DOMAIN-DKIM_SELECTOR-private.pem}{0}}


that worked perfectly before stretch, now does not work anymore?

And also:

>> How can i debug trasport?! ;-)



Thanks.

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