RobS
Jan 17, 2014Altostratus
Exchange ActiveSync Monitor fails with read:errno=104
We have Exchange 2013 running on our F5s. It was built using the iApp and has been working good. They recently discovered that ActiveSync in Exchange 2013 is wide open to everyone so an IP filter list was applied that allows the F5 subnet. Now 2 of our 4 CAS servers are marked down even though they have identical settings, have had IIS restarted, and the servers themselves have been restarted as well. I am doing the following test from F5 command line:
openssl s_client -connect {server_name}:443
GET /Microsoft-Server-Activesync/healthcheck.htm HTTP/1.1 {ENTER}
Host: host.domain.edu {ENTER}
Connection: Close {ENTER}
{ENTER}
The 2 CAS servers that are marked up respond with: 200 OK. The 2 CAS servers that are down respond with: read:errno=104
Does anyone have any insight as to what might cause the read:errno=104 response?
Thanks! Rob