A client has an old MS SBS Server 2003 with SP2. They'll be upgrading soon (Server 2013) but have just had an issue with their exchange emails... as in, their emails aren't coming through.
This happened 30mins ago and also happened last Friday when it was down for roughly 3 hours before it seems to kick back to life of its own accord.
As I personally have very little experience with Exchange directly, at least from a setup/ maintenance point-of-view (most of our clients use Zimbra), I'm hoping you might be able to assist with the following queries:
1/ In MS SBS Server 2003, how can I find out what is causing this issue whereby they aren't receiving email. I can post more info on the problem if you can direct me to any logs which may be helpful.
2/ After Friday, they haven't received any emails which came in over that 3 hour period. Would these emails be stored in Exchange and, if so, where and how can I cause them to flow through to the end user.
In both instances, on Friday and now, the internet connection is very stable (I can easily RDP into the server to check the situation, in fact I'm in there right now).
Happy to offer up any further info if what I've offered above is patchy - just let me know what you need.