I have been trying to figure out a weird problem for one of my clients.
The problem is that we have a client of my client that periodically can't get on our remote access server and we don't recieve emails from them. We can send email to them and they recieve it. This seems to happen about every month or so. I have found that rebooting our servers sometimes fixes it but not always.
The weird thing is that it is only with this one client/place. None of my clients other clients every have this problem. I have gone through our sbs 2008 server from top to bottom and there are no issues of any kind that I can see.
I am trying to determine if this is something on our end or on their end. Is it a dns issue or something else. I am at a total loss as to why this only happens with the one client. It would seem to me that it is something on their end that is misconfigured.
Any help on this would be greatly appreciated.