is it possible to have a local part of the email adress or even the domain part in mixed upper and lower case when using mailcow?
Yes, I know ist does not really makes sense and is not the best of all ideas, but a friend of mine desperantly wants his email to appear at recipients as: His.Name@EXAMPLE.com
He uses Active Sync and Outlook to connect to Mailcow and entered: His.Name@EXAMPLE.com as email but the receipients receive mail from an all lowercase adress like: firstname.lastname@example.org.
When creating a mailbox in mailcow with uppercase it is automatically converted to lowercase - same for domains.
At his company, which they use another MTA, it works with a uppercase/lowercase mix and even uppercase domain part.
Any ideas with this?
Thanks a lot.