RE: [cobalt-users] Multiple Email Servers

["E.B. Dreger" <eddy+public+spam@xxxxxxxxxxxxxxxxx>]

JF> Date: Fri, 24 Jan 2003 11:03:54 -0600
JF> From: Jerry Farquhar

Disclaimer/disclosure:  We're increasingly competing with
UltraDNS and others.  However, I have a great deal of respect
for them... I've not dealt with UDNS, but they definitely are
an intelligent group.

I also would like to confirm the thread's scope.  If email (as
the subject indicated), that's much simpler than all services (as
one could interpret the OP's body).


JF> You may want to check into offerings from UltraDNS.  We were
JF> looking for a 100% uptime arrangement where inbound email was
JF> being split by their DNS settings and sent to two separate
JF> domains which offered the highest level of uptime we have to
JF> date been able to come up with without getting into thousands
JF> of $$ while keeping the management side down to a minimum.

The issue is not really separate domains.  It's having mail
delivered to two different places -- having diverse upstream
connectivity, multiple geographical locations, et cetera.

The problem with email service is that it's inherently one-to-one
communication.  Someone sending mail connects to a single MX...
DNS configuration can provide round-robin capability, but will
not duplicate messages.  Any sort of email redundancy must be
implemented by the MXes, and understood by the POP3/IMAP daemon.

Rudolph, are you trying for failover behavior, load distribution,
or <???>?  Are you set on keeping this on your Cobalts, or open
to outsourcing -- which opens you to a whole range of additional
options.


Eddy
--
Brotsman & Dreger, Inc. - EverQuick Internet Division
Bandwidth, consulting, e-commerce, hosting, and network building
Phone: +1 (785) 865-5885 Lawrence and [inter]national
Phone: +1 (316) 794-8922 Wichita

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