I suggest you at the upstream providers release notes, which is located here:


http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/5.0_Release_Notes/index.html

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.0_Release_Notes/index.html

On Dec 13, 2011, at 10:17 AM, Arnau Bria wrote:

> Hi all,
> 
> we have some (testing) SL6 installations and we're seeing that some
> things have changed between SL5 and SL6.
> 
> I've read
> http://www.scientificlinux.org/distributions/6x/features/differences
> and found the yum.conf issue we faced, but now we've found that
> sendmail is not the default mail server, now it's postfix.
> 
> So, I'm wondering if someone has some more detailed document about
> SL5/SL6 (or maybe this is RH5/RH6 related) differences.
> 
> Many thanks in advance,
> Cheers,
> Arnau