I have successfully imported a cPanel website with hundreds of e-mail accounts to Virtualmin. The problem is the uernames were converted into ‘username.domain’ format during the import. I know that it is completely ok and am aware of @-sign issue in usernames. However in my case the website owner finds new format quite odd to himself and badly wants to return to ‘username@domain.tld’ format that he and users of his website got used to use for many years.
Now I have configured templates so that any new accounts are created as ‘username@domain.tld’ , but the problem is with imported e-mails. There are many of them and they all contain important to the website owner data, so can’t be deleted and re-created. I have to find a way to rename existing accounts. I wonder is there any safe way to convert username format, has anyone done this before?