On Sat 19/Mar/2016 13:56:12 +0100 Sam Varshavchik wrote: 
> Alessandro Vesely writes:
>>
>> Courier can authenticate users 'name@domain' or 'nameonly' with default 
>> domain.
>>  I forgot why I chose one or the other, there was no courier-authlib at the
>> time.  If I were to start now, I'd use domainless tokens differing from their
>> corresponding mailbox addresses.  But I want to as another question:
>>
>> Is it possible/common to have some users with strudel while other users have
>> none?  If yes, are strudeled users treated differently from strudelless ones?
>>
>> I ask 'cause I'm amending the zdkimfilter's mechanism that chooses which 
>> domain
>> an outgoing message is going to be signed with, if any.
> 
> It should be possible. The DEFDOMAIN setting in the imapd and pop3d
> configuration file specifies the default domain used.

I guess a domain is already in place by the time $SENDMAIL is called by imapd's
OUTBOX handler.

> sqwebmail reads Courier's "defaultdomain" file. The standalone version of
> sqwebmail reads the "hostname" file, in its configuration directory.

I patch sendit.sh, and sign according to its $1 parameter.  I reread our
messages about patch of 2006-11-12, and still find it hard to get it straight...

Zdkimfilter looks at the 'i' authname in ctlfile.  At mines it always has a
strudel, but other installations differ.  The filter can obtain the signing
domain from authname, a header field, typically From:, or a fixed value.  I was
wondering if it would make sense to get authname's domain for users who have
one, while leaving more leeway to strudelless users such as admin.

Ale
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