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Hello, @kalpeshcipatel
If you’re interested in using Postfix alongside Gmail to send emails from your droplet you can also check this mini tutorial:
https://www.digitalocean.com/community/questions/using-gmail-with-postfix-smtp-server?answer=60074
Hope that this helps! Regards, Alex
Hello,
As far as I can see script does not support Ubuntu 20.04 yet.
As this is an open-source project, you could submit a feature request via the official GitHub repository and ask for Ubuntu 20.04 support:
https://github.com/mail-in-a-box/mailinabox
Alternatively, you could submit a pull request introducing the change.
Another option is to use a control panel like VestaCP which comes with a mail server pre-configured:
https://www.digitalocean.com/community/tutorials/how-to-install-vestacp-and-migrate-user-data
Also as a side note, I could suggest taking a look at this post here:
https://www.digitalocean.com/community/tutorials/why-you-may-not-want-to-run-your-own-mail-server
Regards, Bobby