Dovecot 使用 vmail 时未收到邮件

Question

以下是我当前的 vmail 配置。

auth_mechanisms = plain login
auth_username_format = %n

protocols = imap lmtp

# Search for valid users in /etc/passwd
userdb {
        driver = passwd
        args = uid=vmail gid=vmail home=/home/vmail/%u
}

# Fallback: Use plain old PAM to find user passwords
passdb {
        driver = pam
}

# Our mail for each user will be in ~/Mail, and the inbox will be ~/Mail/Inbox
# The LAYOUT option is also important because otherwise, the boxes will be `.Sent` instead of `Sent`.
mail_location = maildir:~/Mail:INBOX=~/Mail/Inbox:LAYOUT=fs

我已经确认，如果我使用常规用户主目录，我可以接收电子邮件，但使用 vmail 时则无法接收。