Mapping usernames used for authentication to UNIX usernames

[Florian Effenberger]

Hello,

> Frank> Would it be possible to configure something that will map an
> Frank> email address to the UNIX account name and use the account name
> Frank> for authentication and obtaining the related information (uid,
> Frank> gid, home dir)?

https://dovecot.org/pipermail/dovecot/2018-September/113025.html should 
be what you are looking for. I used that to map legacy accounts to 
username at domain accounts in SQL, but it should also work the other way 
round.

Florian