354使用<CR> <LF>。<CR> <LF>结束数据,邮件未发送

我知道,这个smtp状态已经有了答案,但对不起:我不明白。 我的客户发送大量的邮件,有些不能发送的原因:

This is the mail system at host mailserver.blabla.local. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system <[email protected]>: host mail.hostingserver.de[ip] said: 354 End data with <CR><LF>.<CR><LF> (in reply to end of DATA command) 

更多信息:

 Final-Recipient: acc1; [email protected] Original-Recipient: acc1;[email protected] Action: failed Status: 5.5.0 Remote-MTA: dns; mail.hostingserver.de Diagnostic-Code: smtp; 354 End data with <CR><LF>.<CR><LF> Return-Path: <[email protected]> Received: from localhost (localhost [127.0.0.1]) by neptun.migra-mv.local (Postfix) with ESMTP id 071A07418E6; Thu, 3 Nov 2016 12:04:22 +0100 (CET) X-Virus-Scanned: by amavisd-new-2.10.1 (20141025) (Debian) at migra-mv.local Received: from mailserver.blabla.local ([127.0.0.1]) by localhost (mailserver.blabla.local [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ZkXsQejEkDHg; Thu, 3 Nov 2016 12:04:10 +0100 (CET) Received: from [192.168.2.196] (unknown [192.168.2.1]) by mailserver.blabla.local (Postfix) with ESMTPSA id 512A8741B70; Thu, 3 Nov 2016 12:03:31 +0100 (CET) To: Migra MV <[email protected]> From: IntegrationsFachDienst Migration MM <[email protected]> Subject: =?UTF-8?Q?Aktuell:_=c3=9cber_200_Bildungsma=c3=9fnahmen_auch_f?= =?UTF-8?Q?=c3=bcr_Zugewanderte_in_ganz_M-V?= Message-ID: <[email protected]> Date: Thu, 3 Nov 2016 12:03:51 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="------------55D5725BF82BAD7B1782022E" 

为什么我们得到这个错误,而不是发送的消息? 实际上,大部分消息都是毫无问题的发送。 这可能是收件人的错误吗?