All,
I got working with the following edits to auth-system.conf.ext:
userdb passwd-file { driver = passwd-file auth_username_format=%{user|username} passwd_file_path = /etc/passwd fields { user = %{user|username} name = %{user|lower} home = /var/vmail/%{user} } skip = found
And edits to 10-auth.conf
auth_username_format=%{user|username}
I can now authenticate via email address.
I thought I would provide the fix incase others have this issue.
Very Respectfully, Daniel Reinhardt
PS Dovecot support is awesome
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On Sunday, October 18th, 2026 at 6:40 AM, Aki Tuomi via dovecot <dovecot@dovecot.org> wrote:
Have you tried setting
log_debug=category=authand check logs? It might tell you where the problem lies.Aki
On 18/10/2026 07:06 EEST Daniel Reinhardt via dovecot <dovecot@dovecot.org> wrote:
Horst,
I have that set to default, and it doesn't allow email address to be used.
I get the same error as No Authentication Error.
Very Respectfully, Daniel Reinhardt
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On Sunday, October 18th, 2026 at 4:03 AM, Horst B Simon via dovecot <dovecot@dovecot.org> wrote:
Hi Daniel The %n is invalid in Dovecot 2.4 please see my previous email which had the correct syntax Horst
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