Zitat von Wietse Venema :
Wietse Venema:
> >> 2.) Do /ip6.arpa lookup occur on client connects from IPv4
> >> addresses or only when a client connects by IPv6 (name/reverse
lookups)?
> >
> > The Postfix SMTP server's FCRDNS lookups use the getnameinfo() and
> > getaddrinfo() system libra
Wietse Venema:
> > >> 2.) Do /ip6.arpa lookup occur on client connects from IPv4
> > >> addresses or only when a client connects by IPv6 (name/reverse lookups)?
> > >
> > > The Postfix SMTP server's FCRDNS lookups use the getnameinfo() and
> > > getaddrinfo() system library functions. In dual-p
lst_ho...@kwsoft.de:
> Zitat von Wietse Venema :
>
> > lst_ho...@kwsoft.de:
> >> Hello
> >>
> >> we are on the way to IPv6 and some question arise about Postfix IPv6
> >> behaviour in dual stack setup.
> >
> > You mean dual-protocol. Unlike some versions of Linux, there exist
> > systems that have
Zitat von Wietse Venema :
lst_ho...@kwsoft.de:
Hello
we are on the way to IPv6 and some question arise about Postfix IPv6
behaviour in dual stack setup.
You mean dual-protocol. Unlike some versions of Linux, there exist
systems that have a single unified TCP/IP stack implementation (the
prot
Zitat von Victor Duchovni :
On Mon, Nov 15, 2010 at 10:00:42PM +0100, lst_ho...@kwsoft.de wrote:
Conditionally compiling-in support for such a library is a bit painful,
though opendkim seems to have taken that approach. They have a DNS lookup
driver layer, and the driver reports whether it can
On Mon, Nov 15, 2010 at 10:00:42PM +0100, lst_ho...@kwsoft.de wrote:
>> Conditionally compiling-in support for such a library is a bit painful,
>> though opendkim seems to have taken that approach. They have a DNS lookup
>> driver layer, and the driver reports whether it can support overlapping
>>
Zitat von Victor Duchovni :
On Mon, Nov 15, 2010 at 09:47:07AM -0500, Wietse Venema wrote:
> > With smtp_host_lookup=dns, all SMTP client lookups are sequential.
> > With smtp_host_lookup=native (or dns,native) Postfix in dual-protocol
> > mode will invoke getaddrinfo() with hints.ai_family=PF
On Mon, Nov 15, 2010 at 09:47:07AM -0500, Wietse Venema wrote:
> > > With smtp_host_lookup=dns, all SMTP client lookups are sequential.
> > > With smtp_host_lookup=native (or dns,native) Postfix in dual-protocol
> > > mode will invoke getaddrinfo() with hints.ai_family=PF_UNSPEC.
> > > The interna
lst_ho...@kwsoft.de:
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> Zitat von Wietse Venema :
>
> > lst_ho...@kwsoft.de:
> >> Hello
> >>
> >> we are on the way to IPv6 and some question arise about Postfix IPv6
> >> behaviour in dual stack setup.
> >
> > You mean dual-protocol. Unlike some ve
Zitat von Wietse Venema :
lst_ho...@kwsoft.de:
Hello
we are on the way to IPv6 and some question arise about Postfix IPv6
behaviour in dual stack setup.
You mean dual-protocol. Unlike some versions of Linux, there exist
systems that have a single unified TCP/IP stack implementation (the
prot
lst_ho...@kwsoft.de:
> Hello
>
> we are on the way to IPv6 and some question arise about Postfix IPv6
> behaviour in dual stack setup.
You mean dual-protocol. Unlike some versions of Linux, there exist
systems that have a single unified TCP/IP stack implementation (the
protocols have a fair amo
Hello
we are on the way to IPv6 and some question arise about Postfix IPv6
behaviour in dual stack setup.
1.) Do the lookups for when resolving MX records occur in
parallel to A queries, or is some additional latency expected due to
the fact that many queries fail by timeout and
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