You can of course do this, and it will work. The only reason to run a separate Postfix would be in case your home server becomes unavailable, then the cloud VM will spool (hang onto) your message(s) until your home server becomes available again, and as soon as it's back it will deliver the messages it held.
On 10/06/2019 00:21, Ronald F. Guilmette wrote: > If so, then there simply will be *no* separate instance of Postfix running > "on the cloud side", either independently configurable or otherwise. (So > your comment above makes no obvious sense.)
