This is the Postfix program at host smtpcom.263xmail.com.
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 Postfix program
<[email protected]>: host mx1.mail.cnb.yahoo.com[203.209.228.250] said:
554
Message not allowed - [299] (in reply to end of DATA command)
我前一天还和这个客户正常发送邮件,没理由成垃圾邮件吧?
追答给你这样的建议:
请你先到WEB上收发一下邮件看看,是否是正常?