See http://www.exim.org/exim-html-4.62/doc/html/spec_html/ch13.html#id2569429
for instructions on disabling all IPv6 support including AAAA lookups.

But yes, I agree that if we have no IPv6 support (in fact, I'd go so far as to
say if we have no non-link-local IPv6 addresses), Exim should probably do that
automatically.

Fedora apologizes that these issues have not been resolved yet. We're
sorry it's taken so long for your bug to be properly triaged and acted
on. We appreciate the time you took to report this issue and want to
make sure no important bugs slip through the cracks.

If you're currently running a version of Fedora Core between 1 and 6,
please note that Fedora no longer maintains these releases. We strongly
encourage you to upgrade to a current Fedora release. In order to
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for releases which are no longer maintained and closing them.
http://fedoraproject.org/wiki/LifeCycle/EOL

If this bug is still open against Fedora Core 1 through 6, thirty days
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Thanks for your help, and we apologize again that we haven't handled
these issues to this point.

The process we are following is outlined here:
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We will be following the process here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping to ensure this
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And if you'd like to join the bug triage team to help make things
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This bug is open for a Fedora version that is no longer maintained and
will not be fixed by Fedora. Therefore we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen thus bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

Below is the tcpdump output from using a machine named "test" (which has the 
name "TEST" in tcpdump output) using a machine named "DNSSERVER" for it's DNS.  
I send myself an email, it does two "AAAA" lookups for itself (doing two 
lookups is a bug in itself) and then an "AAAA" lookup for my machine 
nospam.coker.com.au.  At the bottom of this report there is the ifconfig 
output showing that the machine in question has no IPv6 addresses and 
therefore no possibility of ever sending mail via IPv6.  I can only wonder 
what it might do if it was to get a response to one of it's AAAA requests.

This is from exim-4.68-1.fc8.

10:48:25.789466 IP TEST.filenet-nch > DNSSERVER.domain: 65297+ AAAA? test. 
(22)
10:48:25.790795 IP DNSSERVER.domain > TEST.filenet-nch: 65297 NXDomain 0/1/0 
(97)
10:48:25.822382 IP TEST.filenet-nch > DNSSERVER.domain: 37395+ AAAA? test. 
(22)
10:48:25.823566 IP DNSSERVER.domain > TEST.filenet-nch: 37395 NXDomain 0/1/0 
(97)
10:48:25.827032 IP TEST.filenet-nch > DNSSERVER.domain: 36442+ MX? 
coker.com.au. (30)
10:48:25.828610 IP DNSSERVER.domain > TEST.filenet-nch: 36442 1/2/3 MX[|
domain]
10:48:25.829319 IP TEST.filenet-nch > DNSSERVER.domain: 64716+ AAAA? 
nospam.sws.net.au. (35)
10:48:25.830459 IP DNSSERVER.domain > TEST.filenet-nch: 64716 0/1/0 (79)
10:48:25.831066 IP TEST.filenet-nch > DNSSERVER.domain: 4689+ A? 
nospam.sws.net.au. (35)
10:48:25.832517 IP DNSSERVER.domain > TEST.filenet-nch: 4689 1/2/2 A 
61.95.69.195 (132)

eth0      Link encap:Ethernet  HWaddr 00:02:A5:DE:52:B6
          inet addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:386 errors:0 dropped:0 overruns:0 frame:0
          TX packets:312 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:37928 (37.0 KiB)  TX bytes:39671 (38.7 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1435 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1435 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3445452 (3.2 MiB)  TX bytes:3445452 (3.2 MiB)

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Approximately 30 (thirty) days from now Fedora will stop maintaining
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Fedora 8 changed to end-of-life (EOL) status on 2009-01-07. Fedora 8 is 
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If you can reproduce this bug against a currently maintained version of 
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Thank you for reporting this bug and we are sorry it could not be fixed.