Hi, Thanks Arno for your reply, but DNS allows routing the MX recods and in this case it may work the way you told. The problem starts when the machine where a James instance is running goes down. A Load Balancer switch inmediatly to the rest of James instances avoiding the one down, but with the DNS when a machine is down the IP of the machine that is going to process the MX records should propagate along DNS hierarchy and it takes time that we can not assume.
Furthermore, DNS does not balance the load so only a machine receives the load. Thanks again, jose > -----Original Message----- > From: > [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > ache.org]On Behalf Of Arno Schatz > Sent: mi�rcoles, 18 de agosto de 2004 9:02 > To: James Users List > Subject: Re: High availability using James > > > Hi, > > I am not an expert in this matter, but I thought High > Availability is reached by setting > up the DNS to have multiple MX records wiht different priorities. > The sending MTA will > try to send an email to the server listed with the lowest prio of > all MX records, if that > is not available, try the next one. Am I missing something? You > may enter multiple MX > records in your network, however, you should have also at least > one backup mail server in > a different subnet (in case of network problems). > > -Arno > > > Jose Andr�s P�rez wrote: > > Hi everyone!! > > > > I�m thinking around using James in a High Availability but I > could not find > > anything about this in docs, neither in config file. James > works as a stand > > alone Java application so I can not benefit from cluster > characteristics of > > any Application Server (such us WebLogic or JBoss). > > > > Then, I�m thinking in an environment with several James > instances and a Load > > Balancer dispatching SMTP requests to one of those James instances. > > > > �What do you think about this solution?�Do you think there is > another better > > solution? > > > > > > Thanks in advance, > > Jose > > > > > > > > > > Jose Andr�s P�rez > > Software Developer > > > > Development Department > > E-mail: [EMAIL PROTECTED] > > Mobile: +34 600 97 55 02 > > > > mCentric > > mobilicing imagination > > > > Gabriel Garc�a M�rquez, 4 > > 28230 Las Rozas - Madrid > > Spain > > > > Phone: +34 912 770 300 > > Fax: +34 912 770 405 > > > > Experience blackwidow technology at: www.m-centric.com > > <http://www.m-centric.com/> > > > > This message may contain confidential information or privileged > material, > > and is intended only for the individual(s) named. If you are not in the > > named addressee you should not disseminate, distribute or copy > this e-mail. > > Please notify the sender immediately by e-mail if you have received this > > e-mail by mistake and delete this e-mail from your system. > > E-mail transmission cannot be guaranteed to be secure or error-free as > > information could be intercepted, corrupted, lost, destroyed, > arrive late or > > incomplete, or contain viruses. The sender therefore does not accept > > liability for any errors or omissions in the contents of this > message which > > arise as a result of e-mail transmission. If verification is > required please > > request a hard-copy version. > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
