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Peter put forth on 10/29/2010 1:55 PM:
> guess it is something beyond postfix to handle. not sure how postfix users will handle such an issue?
Attempting to architect your remote site cluster or failover solution
via back-n-forth to the Postfix mail list is not the proper way to go
about this. We can give you pointers, but we can't architect the
solution for you. There are too many variables and too much complexity
involved, and the solution will be specific to your individual
situation, of which providing us all the necessary details would be
nearly impossible in this format.
It seems you are in over your head and aren't grasping some of the basic
principles of Disaster Avoidance and Recovery 101. For instance, cheap
and reliable are usually mutually exclusive when it comes to ISPs/Colos.
If your remote link is not reliable, then rsync will be no more
reliable than DRBD, true?
It's probably time to bring in a paid consultant to help you architect
this. If you can't afford one, then you really can't afford a good off
site resiliency solution. If this is the case, then you should
seriously consider outsourced email hosting which will give you all of
what you want, albeit with possibly a little less control.