我怎样才能禁用后缀smtpd错误通知？ 这里是邮件标题：
From - Wed Oct 24 20:16:05 2012 Return-Path: <[email protected]> Received: from mnl-latvia.lv ([unix socket]) by localhost (Cyrus v2.x.xxx-Debian-2.x.xx-xxxx) with LMTPA; Wed, 24 Oct 2012 18:45:44 +0300 X-Sieve: CMU Sieve 2.xxx Received: by example.com (ESMTP daemon) id D9F5315F5A8; Wed, 24 Oct 2012 18:45:44 +0300 (EEST) Date: Wed, 24 Oct 2012 18:45:44 +0300 (EEST) From: [email protected] (Mail Delivery System) To: [email protected] (Postmaster) Subject: ESMTP daemon SMTP server: errors from 130-12.104-92.cust.bluewin.ch[92.104.12.130] Message-Id: <[email protected]> Transcript of session follows. Out: 220 mnl-latvia.lv ESMTP daemon ready In: EHLO Out: 501 Syntax: EHLO hostname In: HELO Out: 501 Syntax: HELO hostname In: QUIT Out: 221 2.0.0 Bye 看起来像我在这里find答案：我从notify_classes指令中删除protocol
协议
Send the postmaster a transcript of the SMTP session in case of client or server protocol errors. The notification is sent to the address specified with the error_notice_recipient configuration parameter (default: postmaster).