MH - Entwicklung writes: 

> 
> ----- Original Message -----
> From: "Sam Varshavchik" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, May 14, 2002 3:36 PM
> Subject: [courier-users] Re: esmtpauthclient and load balancing providers 
> 
> 
>> The problem here is the CNAME record.  Use mrelayng.kundenserver.de
> instead
>> of auth.smtp.kundenserver.de 
>>
> 
> But the official name is auth.smtp.kundenserver.de. This may resolve as a
> completely different host (e.g. mrelayng2.kundenserver.de) some days later.
> Everytime the Provider changes something, I will have to enter the new A

Well, if the provider changes their DNS, and updates the zone file, it is 
reasonable to expect anyone using the DNS to update their corresponding 
configuration as well. 

> different host I have a busy hotline.
> I've seen providers doing this pretty often - I think for load balancing and
> availability reasons.

Load balancing is typically done by simply providing multiple A records.  
Any change to the actual DNS zone requires a complete DNS server reload with 
the new zone, so it's not really a sane way to do load balancing. 


-- 
Sam 


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