We have a single MS Exchange Server (2013 running on 2012 server), and need to bring it down for maintenance work. The emails are usually pushed to the Exchange Server.
As we don't have additional mail servers (DAG), how can we store the inbound emails until the work is fixed?
Our ISP are pushing the email (SMTP) to Exchange Server and I can get them to store it locally by altering the MX record but then I have to retrieve the emails using Pop3 or something when the email server is back online.
I was wondering if there is a better fix for this out there.