After several updates to our exchange 2016 server and client workstation, we have a serious problem in sending mail from one of our clients, The client is a windows 2010 64 bit pro computer running outlook 2016.
When we send an item, it just sits in the outbox, and if we send and receive again we get an error :- Task name.domainname.co.uk Sending reported an error (0x80040115) :We cant complete this because we cant contact the server right now. Please try again later.
Mail is arriving OK.
OWA is working fine.
I have created several new profiles and all configure correctly,
The Outlook 2016 status in the bottom right shows we are connected, although I do notice sometimes it shows trying to connect, but then does connect OK.
Can anyone help in getting to the bottom of this extremely frustrating problem.
The workstation that is experiencing the problem is connected over a WAN, but networking functions OK, and other users on the local side of the network (ie local to the exchange server) do not experience any issues.
This has been working fine for several months, prior to updates, although I cannot say that the updates are the cause of this.
Any advice much appreciated.