[CentOS] network and stability issues

Wed Oct 31 23:07:29 UTC 2012
Karanbir Singh <mail-lists at karan.org>

hi Guys,

Over the last 24 hours we have had a series of stability issues. First,
the DC our mail/lists machine is hosted in had power issues ( Internap
LGA9, NY, USA ); then we had a h/w failure and needed a chassis swap (
thanks to the guys in the DC who executed this within minutes ); and we
have since again had network issues - although power to the DC and the
server seems stable now.

Over the next 24 hours, lets just try and be a bit patient and work with
this. We have good backups so if things dont stabalise in the next 24
hrs we will failover.

The primary reason we have not done this as yet ( failover ), is down to
the fact that its taken a long time, in years, for us to build a
reputation with large hosting facilities and email providers and are on
many whitelists. Moving the host over makes it hard for us to get that
sort of level of trust again really quickly. Longer term, we should
perhaps spread the load through multiple machines and then ensure we
have good relationships out of all these machines exit IP's with the
various vendors and service providers.

There are backup MX's in place, so if there are issues with the primary
machine, we will have mail's go into holding queues and we should not
lose anything inbound.

Karanbir Singh
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