Using Exchange Server 2013 for about 2 months with both roles on one server. Anti-spam is disabled and we have no other spam filters presently. We have the default connectors for Sending and Receiving via MX records. Our ISP (Time Warner) host our email. We began to notice some emails had not been received for a couple of our 10 users, so we logged into the web interface for the mail box of just one of our users to check if anything was in the Inbox. Sure enough, there were actually several emails over that 2-month period that the user never received. We have not checked other users yet but suspect that they have emails left there too.
1. It seems that if our Exchange Server doe snot Receive the emails, they remain at the ISP. How to we determine why this happened? What should we check in our configuration, etc.
2. How do we retrieve the mail now setting at the ISP in the user's Inbox? We use Outlook 2013/2010 as email client for users.
Thanks!