Hi guys,
I started upgrading our ESXi 5.1 hosts to ESXi5.1 Update 1 Build 1065491 ( VMware-ESXi-5.1.0-Update1-1065491-HP-5.50.26.iso) downloaded from VMWare.
I encountered 1 issue, I used Update Manager to remediate the hosts with the update. After upgrading the host our HUB Exchange server stopped receiving Inbound mails. I updated the VM Tools and rebooted the server and it was still not working. I tried adding a new VMXNET3 NIC but to no avail .I then tried to vMotion the VM to another host that has not been updated still running on ESXi 5.1 build 799733 and the server started receiving mails again.
Has anyone encountered this issue or a similar one when doing the update. All other server on the updated hosts are running fine and I have not even updated the VM Tools as yet.
We have 6 hosts ( 3 has been updated to build 1065491 and the other 3 still run on build 799733) I have set the DRS to be less aggressive to not move the vm to a new host.
Thanks