Goodday, All of my users can login on https://customerdomain.tld:20000 with their mailbox name, no need to supply the full IMAP- login. These users can also login with their emailaddress. But some users can only login with their full IMAP- login.
I have never changed the format under Servertemplate / Mail for Domain. I have always used the default format.
Is there a way to manually edit a file to correct this for a few users?
Thanks in advance, it is a minor issue, but I really like to correct it.