あれ

更新されとるな…。今朝、携帯から投稿したらエラーが返ってきたんやが。

Subject: Undelivered Mail Returned to Sender

This is the Postfix program at host tochu.hatena.ne.jp.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to 

If you do so, please include this problem report. You can
delete your own text from the message returned below.

			The Postfix program
<update@hatena.ne.jp>: can't create user output file. Command output: procmail:
    Error while writing to "/var/spool/mail/update"

postfixでprocmailを使っているようだ。