Hostname change on ISPConfig

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There is an easy way to to change a hostname on already installed ISPConfig server, but ih includes a couple of additional steps.


The basic operation of hostaname change is in these steps: ISPConfig > System > Server Config and change Hostname

I also change a server name, as I usually set it to be the same as hostname: ISPConfig > System > Server Services and change Servername.

By doing this, files that get auto-updated by ISPConfig are:


We still must change the following files:


You can do it automatically with sed, but I usually do it manually.

After executing newaliases, the binary file /etc/aliases.db is also fixed.

Find leftovers

Detect if there are still configuration files where old hostname or old domain is mentioned:

grep -r oldhostname /etc
date 01. Jan 0001 | modified 28. May 2021
filename: Hostname change on ISPConfig
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