Ever since I tried to set up a relay server, Roundcube reports: Cannot connect to the IMAP server
I can't connect to Thunderbird either.
I suspect that the IMAP configuration is completely destroyed.>>> New install of EHCP solved this problem.
I worked according to this guide:
https://www.linuxhowto.net/how-to-set-up-postfix-smtp-relay-on-ubuntu-with-sendinblue/Unfortunately, the authentication of the domain doesn't seem to work either.
After more than 12 hours still no verification.
How/where do I have to enter this information (see screenshot)?Solved. I use now netcorecloud.com