Keep in mind that if you have more than 4 MX records in round robin the lookup will only return four, throwing the load balancing a bit out of skew. Linux HA with lvs is dead easy to configure and can do quite a bit with cheap hardware.<br>
<br>-Vlad<br><br><div><span class="gmail_quote">On 2/26/08, <b class="gmail_sendername">Julian Field</b> <<a href="mailto:MailScanner@ecs.soton.ac.uk">MailScanner@ecs.soton.ac.uk</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
-----BEGIN PGP SIGNED MESSAGE-----<br> Hash: SHA1<br> <br> You don't need NFS and locking to run a MailScanner cluster. You just<br> have n independent MX servers all with the same MX priority (or 1 MX<br> record pointing to multiple A records), and have them deliver onwards to<br>
the same mail servers for client email access.<br> Don't start trying to share queues between multiple machines: it's<br> asking for trouble, a nightmare to manage reliably and unnecessary.<br> That's my opinion, anyway :-)<br>
<br><br> Alex Neuman wrote:<br> > Dear list,<br> ><br> > From time to time people have been discussing how to set up<br> > MailScanner so that you can get a highly-available configuration. NFS<br> > and locking have been discussed along with other details regarding how<br>
> "shared" the configuration is between clusters.<br> ><br> > I'd like to see if it would be possible to use a "pretty standard"<br> > config of centos(or<br> > rh)+ms+sendmail+dovecot+clamav+spamassassin+mailwatch(maybe)/etc. and<br>
> how I could either "install from scratch" as a cluster or possibly<br> > "upconvert" one.<br> ><br> > Any docs you might suggest where one would look at different Linux<br> > clustering scenarios, so I can pick it up from there? I could document<br>
> my progress on the list or the wiki.<br> <br> <br>Jules<br> <br> - --<br> Julian Field MEng CITP CEng<br> <a href="http://www.MailScanner.info">www.MailScanner.info</a><br> Buy the MailScanner book at <a href="http://www.MailScanner.info/store">www.MailScanner.info/store</a><br>
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<br>-- <br><br>-Vlad