So I am really struggling to see any reason why this has stopped working. I have also downloaded previous configs and checked them and the settings related to the LB VS are unchanged. I have spent some time checking all the settings, and everything seems correct and nothing has changed. It is as if any connection to the LB VS main IP is not working.Ĭonsidering we had not changed anything in relation to the LB VS, this was surprising. It is also worth nothing that we have a 'backup server' configured, but the auto failover to that is not working either, where it previously worked fine. Connecting to the individual Exchange servers directly is working fine. When I say not working, the service group members are still showing as 'UP' and the VS is showing as 'UP', but when we try and send mail via the LB VS it fails to connect. However, we noted that our SMTP load balancer was no longer working.
Recently we needed to failover our NetScaler cluster for some maintenance, this went fine and testing most things after the failback were fine.
We have had an SMTP load balancer setup for sometime now.
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