Seems the network card on mail4 and mail5 node has gone down, we are in via backup link but primary is down. We are working on it to swap now.
Re: Mail4/5 node issue - network card
Both are up now for some minutes after NIC swap.
Re: Mail4/5 node issue - network card
While we have a new NIC and a new cable in, and servers are already up and running fine for past 8 mins.