North American Network Operators Group|
Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical
Re: Localized mail servers, global scope
At 12:04 PM -0400 2005-06-23, Derek Diget wrote:
GSLB only works if each and every server can supply information appropriate to whatever question might be asked, based solely on where the incoming connection is being generated.I replied privately to the original poster since I was not on NANOG-post, but this would be interesting if the anycasting was tied into some load balancers doing geographical balancing.
In the case of e-mail, at this point you know nothing about the recipient. Unfortunately, the OP has recipients distributed around at least 25 sites in the world, and that's where he really needs his load-balancing. Anycasting and GSLB isn't going to help this problem.
Newsflash: MTAs can be used as both SMTP/SMTP routers and SMTP/local delivery gateways!But certain vendors do have MTAs that can kind of do this. I am thinking about Sun's Messaging Server. Chapter 12 of their Deployment Planning Guide <http://docs.sun.com/source/819-0063/ms-topology.html> mentions a "Distributed Topology" that I thinks fits the original posters requirement pretty closely.
Riiiiiiiiiiiiiiight. I don't suppose anyone here saw my previous mention of the Lachman-LASER IETF draft for doing mail routing via LDAP? Heck, what about mail routing via something like NIS? Or do you want me to go back into ancient history and dig up UUCP and the route mapping tables that were developed?
Setting up a router-only external infrastructure which then passes on incoming messages to the appropriate back-end is nothing new. See <http://www.shub-internet.org/brad/papers/dihses/> and <http://www.shub-internet.org/brad/papers/sistpni/>.You can abstract the mail reception (SMTP/MSA) routing behind the MTAs and also abstract the mail retrieval (IMAP/POP/Webmail) behind the Messaging MultiPlexors (MMPs). I would think if further discussion on this vendors product is wanted, then please see a web site <ims.balius.com> that has information on the user mailing list.
Trying to dress up something basic like this and then turn around and sell it as a commercial service is also not new.
Brad Knowles, <[email protected]>
"Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety."
-- Benjamin Franklin (1706-1790), reply of the Pennsylvania
Assembly to the Governor, November 11, 1755
SAGE member since 1995. See <http://www.sage.org/> for more info.