Bj?rn Ruberg:
> Pablo Scheri wrote:
>
> [...]
>
>
> > The problem is that when I send mails to the postfix, for example 1000
> > mails, It routes 990 to one of the exchange (10.0.0.208) and 10 to the other
> > one (10.0.0.207).
> > I alter the order of the A records to see if it changes, but did not.
> >
> > In the maillog the only difference I see is that the "delay=x" value in the
> > 10.0.0.207 server is a very high number (40) and for the 10.0.0.208 server
> > is 0.18 aprox.
> >
> > Does anyone know whats going on with it?
> >
>
> If your DNS servers are running on Microsoft systems, you may be
> affected by their LocalNetPriority logic, which consider itself smarter
> than round robin DNS.
>
> See http://support.microsoft.com/kb/177883 for details.
To prevent that problem, Postfix randomizes the order of DNS records
that have equal preference.
Wietse
