This one time, at band camp, Florian Weimer said:
> Hmm, speaking of MXes, mail delivery over IPv6 seems to be enabled on
> master:
> 
>   router = dnslookup, transport = remote_smtp
>   host mail.enyo.de [2001:14b0:202:1::a7] MX=10
>   host mail.enyo.de [212.9.189.167]       MX=10
> 
> But master does not seem to have IPv6 connectivity.  Maybe this is
> causing the problems, but this would also mean that Exim itself is
> buggy.
> 
> It probably makes sense to disable IPv6 support in Exim on master,
> independently of my current problem.  I'm going to suggest this to
> postmaster@ once I figured out a good way to implement this.

I doubt that's the problem.  This is from my logs:

2005-08-10 13:33:46 1E2uSY-0005KV-1Q <= [EMAIL PROTECTED] H=lobefin.net 
(www.lobefin.net) [216.158.52.108] U=Debian-exim P=asmtp 
X=TLS-1.0:RSA_AES_128_CBC_SHA:16 A=plain_server:steve S=2386 [EMAIL PROTECTED]
2005-08-10 13:33:46 1E2uSY-0005KV-1Q IPv6 socket creation failed: Address 
family not supported by protocol
2005-08-10 13:33:46 1E2uSY-0005KV-1Q mail.enyo.de [2001:14b0:202:1::a7]: 
Address family not supported by protocol
2005-08-10 13:33:47 1E2uSY-0005KV-1Q => [EMAIL PROTECTED] R=dnslookup 
T=remote_smtp H=bugs.debian.org [140.211.166.43] QT=1s DT=1s
2005-08-10 13:33:49 1E2uSY-0005KV-1Q => [EMAIL PROTECTED] R=dnslookup 
T=remote_smtp H=mail.enyo.de [212.9.189.167] QT=3s DT=3s
2005-08-10 13:33:49 1E2uSY-0005KV-1Q Completed

I have IPv6 support in kernel and exim, but no IPv6 connectivity, so it
falls back to IPv4 without any noticable delay.
-- 
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|   ,''`.                                            Stephen Gran |
|  : :' :                                        [EMAIL PROTECTED] |
|  `. `'                        Debian user, admin, and developer |
|    `-                                     http://www.debian.org |
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