不能发送邮件显示procmail错误

The Postfix program

: can't create user output file. Command output:
procmail: Error while writing to "/var/spool/mail/chen"

我在main.cf 中把procmail去掉后显示
The Postfix program

: cannot access mailbox /var/spool/mail/chen
for user chen. error writing message: File too large

解决方案:
Is it possible that it's not the email attachment that's too large, but
the /var/mail/email_user mbox file? You may want to disable the mailbox
size limit of Postfix if your users are supposed to be able to fill
their mailboxes up ad infinitum. To do this, add the following to your
/etc/postfix/main.cf and reload postfix:

# Allow unlimited mbox sizes for archives
mailbox_size_limit = 0

main.cf中设置:
delay_warning_time = 4
因为考虑到信件流量的问题，postfix缺省不发送通知。