DNS provides basic round robin, when a dns query is made to given DNS server, in reality it is upto sender who to sent it too regardless the query order , so if you want true LB you have got to have HW load balancer in the front with multiple IPs
Oz Oz Casey, Dedeal Senior Network Consultant www.Geek5050.com Please Visit Us On Web Providing IT Services for your business..... P: (202) 670-3606 (Office) P: (202) 656-7519 (Office) P: (202) 656-2119 (Office) www.Geek5050.com On Feb 28, 2011, at 8:30, "Tu, Kevin" <k...@ccscorporation.ca> wrote: > Hello, > > > > It seems there are two ways to load balancing incoming email using DNS MX > records. > > > > Method 1: Multiple MX records with equal priority. > > > > Method 2: One MX record with multiple IP address. > > > > What’s the pros and cons? Somebody suggested the Method 1, because multiple > MX entries with the same priority will cause the mail to be delivered faster > to the alternative server if the first one it tries is unavailable. Is that > right? > > > > Thanks, > > > > > This email and any files transmitted with it are solely intended for the use > of the addressee(s) and may contain information that is confidential and > privileged. If you receive this email in error, please advise us by return > email immediately. Please also disregard the contents of the email, delete it > and destroy any copies > immediately. > CCS Corporation and its subsidiaries do not accept liability for the views > expressed in the email or for the consequences of any malicious code that may > be transmitted with this email. > This email is also subject to copyright. No part of it should be reproduced, > adapted or transmitted without the written consent of the copyright owner. > > CCS-06-01-2009 > --- > To manage subscriptions click here: > http://lyris.sunbelt-software.com/read/my_forums/ > or send an email to listmana...@lyris.sunbeltsoftware.com > with the body: unsubscribe exchangelist --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to listmana...@lyris.sunbeltsoftware.com with the body: unsubscribe exchangelist
