[BlueOnyx:01206] Re: e-mail alias problem

[Michael Stauber]

Hi Stuart,

> I recently reported that I was having problems with the aliases
> resolving on certain sites. I have got to the bottom of the issue and
> thought I would update the list.
>
> We have external DNS servers so this is not setup on the blueonyx
> server.
> If you create DNS for the site using CNames then any aliases will not
> resolve.
> If you create DNS using ARecords the aliases resolve just fine.
>
> It seems that sendmail cannot resolve cnames.


There is one mantra that has been repeated over and over again ever since the 
first Cobalt RaQs. It's also true for BlueQuartz and BlueOnyx:

Do NOT use CNAMES. They're evil!

That can't be repeated often enough, because sometimes for some cases on a 
specific platform CNAMES may work, but don't on another platform. So people 
say "But this worked on my RaQ550 or BlueQuartz and doesn't work here!". Why? 
Because CNAMES are evil and you shouldn't use them. :o)

-- 
With best regards

Michael Stauber