Not sure about this, but they may be doing some kind of load balancing. I'd suggest not condensing the MX records based on IP address.
Steve > -----Original Message----- > From: Noel J. Bergman [mailto:[EMAIL PROTECTED]] > Sent: Monday, August 19, 2002 8:48 PM > To: James-Dev Mailing List > Subject: Lots of twisty, er, servers all the same ... > > > As you can see from the nslookup of ATT.NET that follows, > they have lots of MX records, all the same IP address. On > nights like tonight when AT&T is jammed, this can block a > delivery thread for over an hour. > > Is there a reason why getMailServers [actually, > DNSServer.findMXRecords()] should not return a collection > containing only one entry per IP address? > > --- Noel > > > set q=mx > > att.net > Server: MACU.MA.MT.NP.ELS-GMS.att.net > Address: 199.191.145.136 > > att.net MX preference = 5, mail exchanger = gateway1.att.net > att.net MX preference = 5, mail exchanger = gateway2.att.net > att.net MX preference = 5, mail exchanger = gateway3.att.net > att.net MX preference = 5, mail exchanger = gateway4.att.net > att.net MX preference = 5, mail exchanger = gateway5.att.net > att.net MX preference = 5, mail exchanger = gateway6.att.net > att.net MX preference = 5, mail exchanger = gateway8.att.net > att.net nameserver = ohcu.oh.mt.np.els-gms.att.net att.net > nameserver = macu.ma.mt.np.els-gms.att.net att.net nameserver > = orcu.or.br.np.els-gms.att.net att.net nameserver = > wycu.wy.br.np.els-gms.att.net > gateway1.att.net internet address = 204.127.134.23 > gateway2.att.net internet address = 204.127.134.23 > gateway3.att.net internet address = 204.127.134.23 > gateway4.att.net internet address = 204.127.134.23 > gateway5.att.net internet address = 204.127.134.23 > gateway6.att.net internet address = 204.127.134.23 > gateway8.att.net internet address = 204.127.134.23 > ohcu.oh.mt.np.els-gms.att.net internet address = 199.191.144.75 > macu.ma.mt.np.els-gms.att.net internet address = 199.191.145.136 > orcu.or.br.np.els-gms.att.net internet address = 199.191.129.139 > wycu.wy.br.np.els-gms.att.net internet address = 199.191.128.43 > > > > > -- > To unsubscribe, e-mail: > <mailto:james-dev-> [EMAIL PROTECTED]> > For > additional commands, > e-mail: <mailto:[EMAIL PROTECTED]> > > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
