Hello, I have fresh installation of ISPconfig on debian 8.7. After successfull installation I access https://myip/webmail and it shows roundcube properly. But after I added first domain with SSL (letsencrpyt), /webmail site throws 404 error.
Yes, everything else works well, websites, FTP, db... But I cannot access only /webmail after added SSL certificate to some domain in ISPconfig. Or maybe it does not work after I added new site and SSL certificate does not causes that bug.
Did you use :8080/webmail, :8181/webmail or just /webmail before when it was working? Are you using nginx or apache2?
I tried install new server on digitaocean with ubuntu 16.04 with autoinstaller script (https://www.howtoforge.com/tutorial/ispconfig-automated-install-script/), everythinkg was OK. https://serverIP/webmail works after installation. I added one domain without SSL in ISPconfig and again. After I added domain https://serverIP/webmail throws 404 error...
What is your ISPC version? Have you tried adding LE SSL for the domain(s) you created without ssl? Edited: Note that I do not know your problem is and the questions are meant to help determine what could be the problem.