dovecot quota-warning detection mail

Hi, all. we use quota-warning emails to notify you of quotas.

In rare cases, the email address has changed to the logged-in user. (Because the address of %u is passed as the logged-in user.)

So I couldn’t send the email with “Recipient address rejected: User unknown in local recipient table”.

Why does my email address change to a logged-in user? %u of "quota_warning = storage = 95 %% quota-warning 95% u" The output is the logged-in user.

By Morikawa