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Date:      Sun, 11 Mar 2001 19:46:48 -0800 (PST)
From:      John Polstra <jdp@polstra.com>
To:        stable@freebsd.org
Cc:        dinesh@alphaque.com
Subject:   Re: DNS related sendmail hangs with 4.3-BETA kernel
Message-ID:  <200103120346.f2C3km905485@vashon.polstra.com>
In-Reply-To: <Pine.BSF.4.21.0103121130560.1021-100000@prophet.alphaque.com>
References:  <Pine.BSF.4.21.0103121130560.1021-100000@prophet.alphaque.com>

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In article <Pine.BSF.4.21.0103121130560.1021-100000@prophet.alphaque.com>,
Dinesh Nair  <dinesh@alphaque.com> wrote:
> 
> On Sun, 11 Mar 2001, John Polstra wrote:
> 
> > Sendmail (and _only_ sendmail) hangs trying to use DNS to resolve
> > addresses.  The DNS calls eventually time out and fail, but it takes a
> 
> john,
> 
> i saw the same thing when i moved from 4.1R to 4.3-BETA over the last
> week. sendmail by default is compiled with IPv6 support and this is what's
> causing the seemingly hang when it sends out email. ethereal confirmed
> that it was sending out IPv6 DNS queries and attempting to connect thru
> IPv6 before reverting back to IPv4.
> 
> remove the "-DNETINET6" in /usr/src/usr.sbin/sendmail/Makefile and rebuild
> sendmail. works fine for me after that.

Thanks for the reply.  In my case the update of
"src/lib/libc/net/res_send.c" that Gregory Neil Shapiro pointed out
was the solution to the problem.

John
-- 
  John Polstra                                               jdp@polstra.com
  John D. Polstra & Co., Inc.                        Seattle, Washington USA
  "Disappointment is a good sign of basic intelligence."  -- Chögyam Trungpa


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