Nothing that I'm aware of.
When convenient you should change this back to svr1 as it provides that additional layer of redundancy. Also, accesses to servers 2 & 0 trigger an SMS alert to warn that there may be an issue with svr1. (I currently have you whitelisted to avoid such alerts).
Although not much help on this instance, but if you were using svr1 1st you'd get three of these (one for each server tried).
Clearly *something* has changed, but not from the ozpost side of things. These are DNS lookup errors, in other words it is a resolver problem with your webhost/server.
Such problems are not uncommon and usually fix themselves within a few minutes. If it persists much longer than that you'll need to do further investigationing.
Cheers
Rod
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