Can't add a second alias with the same own domain
I've already set up an alias with my own external domain, so I've configured the subdomain, the TXT record and the MX records for that alias. All working good. Now I'd like to add a second alias with the same external domain but when I do I get another security code from mailbox.org. I understand that it is using the same subdomain I've already configured but a different TXT record for the different alias. So I've created this new TXT record but it's not working, I still get the security code message in mailbox.org. I am a paying user and I've chosen the 5gb mailbox with 25 aliases and team mail.
Any solutions please?