We have a hybrid office365 environment with exchange 2010. We recently had an issue with receiving external email. Apparently recreating the send connector resolved that issue. Now I have the problem with migrating mailboxes to office365. It complains about accessing the FQDN server. When I look at the on prem server I see that event id 1035 and 6004 logged. When I look at 1035 The IP address it shows is an IP address on our domain but not sure why anything on that server is trying to access exchange. It is a sever running other application. When I look at event id 6004, the time time stamp of the log file is years old. I attached the event log.