On Thu, Jan 21, 2021 at 04:33:07PM -0500, Wietse Venema wrote: > Chris Green: > > I currently have mail for ch...@isbd.co.uk and c...@isbd.net forwarded > > by my hosting service to a Postfix server on my desktop machine (which > > is zbmc.eu). The Postfix configuration is fairly simple, just accepts > > mail for the zbmc.eu domain and sends mail via my hosting service's > > smarthost. > > > > I want to create a similar Postfix server installation on a VPS I > > already run so that if my home desktop machine has a long down time > > for any reason I can forward my mail from my hosting provider to the > > VPS instead. This is a simple reconfiguration on my hosting provider. > > > > The VPS has postfix version 3.3, my desktop has version 3.5.6, am I > > likely to encounter any problems with a similar main.cf on the older > > version? I realise I have to change the myorigin, mydestination and > > myhostname but I'm hoping that's basically all. > > I suggest that you look in the RELEASE_NOTES file. Configurations > that work for Postfix 3.3 should also work with Postfix 3.5.6. The > other way around is not possible if you use Postfix 3.5 features > that don't exist in Postfix 3.3. > > Why can't both servers run the same version? > The versions of Postfix are those that are provided by the Ubuntu repositories for the Ubuntu versions being run. The VPS is running an older version of Ubuntu as that's all the hosting service provides.
I *could* maybe try and install a newer version of Postfix, it's easy enough to try I guess. -- Chris Green
