On 15 November 2013 13:20, steve-ALUG@hst.me.uk wrote:
As you want to secure SMPT onto it, I'm guessing that you're not just picking up mail from a pre-filtered server (gmail, yahoo, outlook etc), but actually receiving and sending mail directly from the big bad internet. If that's the case I'd suggest you need a capable, robust, mail server with a large amount of support available for it, with anti-spam and anti-virus capabilities either built in, or attachable to it. To me that suggests something like postfix or Exim.
You're probably right, and I'll probably just work with Postfix for convenience.
Yes, email will be coming from the big bad Internet, from a select number of devices (on dynamic IPs so no way to tie it down at that level). I will not need to accept any unauthenticated connections, although they may not always be encrypted (depends on the capability of the device sending it). I could, on the other hand, relatively easily limit the number of accepted destination addresses (which email would be forwarded to, the destinations will not reside on the same server).
I'll play with Postfix and see where I end up. As overheads go, I doubt that it's a big enough one to really worry about if it's mostly idle anyway.