hoopycat wrote:
When there's ever a doubt about whether things will come back correctly after a reboot, it's a good idea to reboot while it's fresh in your mind. Otherwise, you're bound to get an unpleasant surprise some months down the line when you actually do have to reboot. And when that happens, it won't be fresh in your mind 
Effin fantastic idea actually, gonna go do that now, thanks!
Hybinet: Thanks again for your help in this. I now have the board emails working without issue. However, if I later do want to go back and setup an SMTP server to begin creating email accounts, will it interfere again? I know it is possible to have both mail systems working in tandem, just want to be a bit more careful next time round.