I've got it on a ups with a gennie. Had a few clients moaning today that we haven't replied to mails they sent last week, I couldn't find anything wrong except load shedding which I doubted, but just wanted to make sure. But turns out it was on each of the clients' side, sent to wrong email address/ sent with humongous attachment / thought they sent it but didn't... So all is well, thanks for the replies.