smtp load balancer???

Chris Conn cconn at ABACOM.COM
Wed Dec 7 20:03:40 GMT 2005

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Joshua Hirsh wrote:
>>I am considering adding an SMTP load balancer in front of my 
>>MS servers.
>>Any suggestions?
> Hi Denis,
>  Have you tried setting up multiple A records for one MX, instead of two equal value records? 
> For example:
>	IN	MX	5
> smtpe1		IN	A
> smtpe1		IN	A
>  It might be cheaper instead of buying a device to actually balance it out, but I don't have any data on how well this balances out the requests as compared to how you have it setup now (two equal value MX records).

If you go the DNS route, reduce your TTL to a small value (ie 5 or zero).

If you are using Cisco, SLB is a simple and effective way to go.  Provides 
health-checking too.

Chris Conn

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