Am 15.05.2012 23:37, schrieb Frank Cox: > On Wed, 16 May 2012 00:31:22 +0300 > Jussi Hirvi wrote: > >> BTW, the two servers are virtual machines in one and the same physical box. > > What's the point of that? (Genuine question.) > > One server here, one across town, or even two separate boxes in a single room > -- sure. But in the same box? If the the box is on fire, now you're out both > your main and your backup server. > > I must be missing something; what is it? I feld exactly the same when I saw both mail servers where in the same subnet. No point in doing that. Jussi should run 2 identical setups in 2 hosts as MX with same priority if redundancy is desired. Of course, having them as VMs on the same hosts limits the redundancy quite a bit as the host is the single point of failure here. Alexander