> -----Original Message----- > From: John Madden [mailto:[EMAIL PROTECTED] > Sent: Friday, May 13, 2005 8:53 AM > To: Marc Powell > Cc: [email protected]; Marc Powell > Subject: RE: [SM-USERS] Re: Load Balancing and session side effect > > > What is your technical reason for this suggestion and admonition? I've > > been storing mail on NFS servers successfully for almost 10 years now > > with tens of thousands of active users. I've not experienced any > > problems yet and I don't expect to. > > We tried it over a weekend; NFS performance with load-balanced courier > IMAP > daemons performed much worse than native storage and single imapd's.
I have not experienced any performance problems with that exact setup. I would say having 36942 email accounts is a pretty good pool to gather data from. I've used a similar setup with >50,000 accounts as well. It sounds to me that you may have had some configuration or hardware issue that you didn't discover. As far as using a single imapd, you're awfully trusting that you won't have any problems IMHO. Lack of redundancy can become very obvious when you have a failure. > > If a server is down the DNS RR will still redirect users to it. > > Yeah, and the RR will redirect users to the down server too. Better to > leave it Isn't that what I just said? > to the MX, where remote MTA's will stop using downed servers > automatically. He wasn't asking about MTA's but about imap/http load balancing via DNS RR. It will work just fine given the caveat above. > Sorry, DNS isn't the proper way to do load balancing. No perhaps not, but it can be effective and it's easy to do if you don't have mission critical applications. -- Marc ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_ids93&alloc_id281&op=click -- squirrelmail-users mailing list Posting Guidelines: http://squirrelmail.org/wiki/wiki.php?MailingListPostingGuidelines List Address: [email protected] List Archives: http://news.gmane.org/thread.php?group=gmane.mail.squirrelmail.user List Archives: http://sourceforge.net/mailarchive/forum.php?forum_id)95 List Info: https://lists.sourceforge.net/lists/listinfo/squirrelmail-users
