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From: D. Stussy on 6 May 2008 17:23
"Graham Murray" <newspost(a)gmurray.org.uk> wrote in message
news:87k5i7ivbr.fsf(a)newton.gmurray.org.uk...
> One of my systems I administer running sendmail 8.14.2 has IPv6
> enabled. I am happy to receive incoming connections (ie sendmail acting
> as server) on IPv6 but want all outgoing connections (ie sendmail as
> client) to use IPv4[1].
>
> In the .mc file I have set
>
> DAEMON_OPTIONS(`Family=inet6')dnl
> CLIENT_OPTIONS(`Family=inet')dnl
>
> and the .cf reflects this. But it still uses IPv6 when connecting to a
> server which lists a host with an AAAA as the MX.
>
> [1] As the IPv6 interface uses the 6to4 tunnel mechanism so has no
> reverse DNS.

Then SET up a reverse zone. https://6to4.nro.net/



From: Graham Murray on 7 May 2008 02:02
"D. Stussy" <spam(a)bde-arc.ampr.org> writes:

> Then SET up a reverse zone. https://6to4.nro.net/

Thank you. I was not aware that this was possible.
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