I upgradedmy Ironport C170 Cluster nodes to 11.0.0 from 10.0.2 and now I cannot join one of them back to cluster because I get the follwoing error
Machine mail.paytel.com (Serial #: 5057A8E1FEB6-FTX1621M01Q) -
disconnected: mail2.paytel.com -> mail.paytel.com: Network communication error:
<Invalid_Server_Public_host_Key host_id=<IPv4_Remote_Host_ID instance
ip='10.50.30.11' hostname=None>> (Mon Oct 22 05:24:05 2018 EDT)
Machine mail2.paytel.com (Serial #: 5057A8E1FA93-FTX1621M01C)
Also sends me an e-mail saying
Error connecting to cluster machine mail.paytel.com (Serial #: 5057A8E1FEB6-FTX1621M01Q) at IP 10.50.30.11 - Invalid host key - No public host keys matched the remote host.
Version: 11.0.0-274
Serial Number: 5057A8E1FA93-FTX1621M01C
Timestamp: 22 Oct 2018 05:23:39 -0400
I do not know enough about this to try and remedy it without some assistance, can anyone direct me in the right recourse?