On 17/08/17 13:38, Chris Green wrote: > I run Postfix on a home server which is on all the time of course but, > as it's connected via a 'domestic' broadband service it's not a 100% > reliable connection. There are also times when I reconfigure things > (e.g. upgrade the server) that cause downtimes. >
I am in an identical situation to you - my broadband modem locked up this morning & I had to reboot everything :-( My original domain hosting service forwarded emails to a pop-3 account (run by my ISP) When postfix came along, the pop-3 account became my fall-back. My new domain host offers a back-up server, and that is how I am running now. In reality, I receive very few genuine emails via the back-up server; they are mostly spam which has been refused by my primary, or from hosts which didn't bother trying the primary. About a month ago I implemented grey-listing within postscreen. Since then I have had half a dozen or so immediate retries via the secondary. I am brooding over the idea of obtaining an "el cheapo" second internet connection - that opens up the possibility of running my own secondary server on a raspberry pi, or something. I don't think any harm would come by NOT having a back-up of some sort - but it runs severely against my nature. hope this helps Allen C
