ssh to the appliance
Choose Network –> IP Interfaces
Choose the dataport
Enter new hostname
Submit and Commit.
- Change the appropriate DNS in your MX record of your SMTP Domain (Godadddy for example)
- Contact your IP Provider to change the proper PTR Record (AT&T for Example)
If IronPort is on a cluster _ Run Clustercheck to make sure there is no inconsistencies after renaming