Bug#296492: [exim] [Debian normal bug #296492] exim4: remote_smtp transport should fallback to ipv4 with fallback_hosts too

[Philip Hazel]

On Sun, 27 Feb 2005, Marc Haber wrote:

> this is Debian Bug #296492, which I consider a bug with normal
> severity from a Debian point of view.
> 
> ----- Forwarded message from Laurent Fousse <laurent@komite.net> -----
> 
> > When sending to a remote host that has both an ipv6 and ipv4 RR, exim
> > falls back immediately to ipv4 when ipv6 connectivity is not present.
> > I noticed however that exim is stuck to ipv6 when it's trying to send
> > to a "fallback_host".
> 
> ----- End forwarded message -----

I would like to see some real evidence (configuration and debug output)
of that before spending time on it. Trying to invent the special
circumstances that might provoke a bug like that could take a lot of my
(currently rather scarce) time. I would rather somebody else did the
groundwork... :-)

[First reaction is that any such problem is odd, because exactly the 
same code is used for fallback hosts as for other hosts. It just calls 
the same transport again with a different list of hosts.]

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@cus.cam.ac.uk      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book