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To: cygwin@cygwin.com
From: "D. Boland" <daniel@boland.nl>
Subject: Re: Minires truncates host names
Date: Sun, 06 Jul 2014 09:07:38 +0200
Lines: 35
Message-ID: <53B8F5BA.2E4770D4@boland.nl>
References: <53B85C0A.A51E8FA2@boland.nl> <026e01cf9899$491058a0$db3109e0$@alum.mit.edu>
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"Pierre A. Humblet" wrote:
> To me it looks like the string was already truncated when it was passed to
> the function.
> 
> You can test e.g. by using exim -d+resolver  -bt   daniel@cygwin.com
> 
> It's wonderful that you got sendmail to work.
> 
> Pierre
> 

Thanks for the swift reply!

I looked at Sendmails' source code. Here's the snippet which produces the output
from my first email. It's taken from the file sendmail/domain.c:

                        sm_dprintf("dns_getcanonname: trying %s.%s (%s)\n",
                                host, *dp,
# if NETINET6
                                qtype == T_AAAA ? "AAAA" :
# endif /* NETINET6 */
                                qtype == T_A ? "A" :
                                qtype == T_MX ? "MX" :
                                "???");
                errno = 0;
                ret = res_querydomain(host, *dp, C_IN, qtype,
                                      answer.qb2, sizeof(answer.qb2));


As you can see, it first prints the host to be looked up, and then passes the string
unaltered to res_querydomain.

I will create a source release, so it can be tested.

Daniel


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