> On 28/07/2024 19:41 EEST Rachel Roch via dovecot <dovecot@dovecot.org> wrote:
>
>
> >> I am getting the following error when Postfix attempts LMTP delivery :
> >>
> >> "lmtp(REDACTED)<32674><7Jm0BSVopmaifwAAbW4UVQ>: Fatal:
> >> setresgid(121(mailbox_user),121(mailbox_user),8(mail)) failed with
> >> euid=111(mailbox_user): Operation not permitted"
> >>
> >> mailbox_user is uid 111, gid 121 on my system.
> >>
> >
> > Not related to low uid/gid numbers? I think newer OS have their limits
> > increased to above 1000 or so.
> >
>
> Well, my OS is Debian Bookworm which should be "newer" enough ? ;-)
>
> User/group were originally created via :
>
> adduser --system --disabled-login --shell /usr/sbin/nologin mailbox_user
> addgroup --system mailbox_user
It's trying to set group 8, which mailbox_user appears to be not part of?
Also, if it's extra group, you need to do
service lmtp {
extra_groups = mail
}
Aki
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