Username login no longer possible after migration to 0.16

Issue Description

I have a account name set 2 years ago and I login to admin page, Apple Mail and Outlook Classic with username (without domain). For me it is creeperkong.

However after I finished migration, I have to use one of the mail address to login. (as I have several domains as alias for postmaster and webmaster, I don’t want to go into confliction).

Expected Behavior

Successfully login with non-address ID.

Actual Behavior

Not successful

Stalwart Version

v0.16.x

Installation Method

Binary (Linux)

Database Backend

MySQL

Blob Storage

MySQL

Search Engine

Internal

Directory Backend

Internal

I have reviewed the documentation and FAQ and confirm that my issue is NOT addressed there.

on

I have searched this support forum (open and closed topics) and confirm this is not a duplicate.

on

I understand that topics in this category are triaged by a bot first but a human reply will follow up. If I’d prefer a human-only reply, I’ll add the no-ai tag to my topic.

on

Do you have a ‘Default Domain’ set at Network->General on the admin page? /admin/Settings/x:SystemSettings/NetworkSettings

It worked now, with only username.