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From:	"Pierre A. Humblet" <Pierre DOT Humblet AT ieee DOT org>
To:	<cygwin AT cygwin DOT com>
References:	<0NHP009ITJ361TD0 AT vms173009 DOT mailsrvcs DOT net> <20150108132353 DOT GN4190 AT calimero DOT vinschen DOT de> <003d01d02e83$1aaaf7b0$5000e710$@ieee.org> <20150112165130 DOT GP15791 AT calimero DOT vinschen DOT de> <20150112171413 DOT GQ15791 AT calimero DOT vinschen DOT de> <20150113103706 DOT GT15791 AT calimero DOT vinschen DOT de>
In-reply-to:	<20150113103706.GT15791@calimero.vinschen.de>
Subject:	RE: Resolving localhost on Windows 7 (for exim)
Date:	Wed, 14 Jan 2015 09:47:03 -0500
Message-id:	<017201d03008$f61fdfa0$e25f9ee0$@ieee.org>
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> -----Original Message-----
> From: Corinna Vinschen
> Sent: Tuesday, January 13, 2015 05:37
> 
> On Jan 12 18:14, Corinna Vinschen wrote:
> > On Jan 12 17:51, Corinna Vinschen wrote:
> > > On Jan 12 11:16, Pierre A. Humblet wrote:
> > > > Now the bad news:  the exim daemon crashes.
> > > >
> > > > The reason is this:
> > > > $ getent passwd exim
> > > > NT SERVICE+exim:*:376394:376394:U-NT
> > > > SERVICE\exim,S-1-5-80-3213360373-4072665756-2198108471-
> 1641386292-
> > > > 839958090:/:/sbin/nologin
> > > >
> > > > So even though I am requesting just "exim" I am getting an entry for "NT
> SERVICE+exim"
> > >
> > > That's definitely a bug and I can easily reproduce it.  I'm not sure
> > > yet how this happens, but this is really not ok.  I'll have a look ASAP.
> >
> > Oh darn, I especially *implemented* this behaviour, for the sake of
> > being able to fetch the "TrustedInstaller" account by name.
> >
> > And then TrustedInstaller gets the account name "NT
> SERVICE+TrustedInstaller"
> > anyway, so I'm rather puzzled what I was thinking back in November.
> >
> > Fitting: getent passwd "NT SERVICE+servicename" does *not* work,
> > except for "NT SERVICE+TrustedInstaller".  Oh well.
> >
> > I'll prepare a fix today or (more likely) tomorrow.
> 
> Done.  I uploaded a snapshot with this change to
> https://cygwin.com/snapshots/  Please give it a try.

Works fine, thanks a lot.

Also earlier in this thread I reported that DnsQuery was sometime 
failing to resolve localhost with an error (not the question/answer snafu).
What happens is that if you ask e.g. to resolve localhost for a MX record,
DnsQuery answers that localhost does not exist and it repeats that answer
even for A and AAAA record for the next 15-20 min (surely the TTL).
That's a bug I can live with (it may depend partially on the upstream
nameservers). It will be mitigated when I add functionality to
gethostbyname2 as discussed previously.

Pierre


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