For some reason my main mailbox is set to Forward-Only Email. I would like to stop this but I don’t know how to desactivate this setting.
Many thanks in advance for any help.
You can change your mail settings by logging into your web panel and selecting Manage Email > "edit" (on the far right of the email address). Here's a quick link: https://panel.dreamhost.com/index.cgi?tree=mail.addresses& Then on the next page change your settings to "Fully Hosted Email". This is the same page where you would have set up your email to forward-only, and where you should go to change your email settings in the future.
Let us know if you need any more help!