标题: 邮件发出总是退回,提示SMTP error, RCPT TO: 550 [打印本页] 作者: pc138 时间: 2007-3-9 18:21 标题: 邮件发出总是退回,提示SMTP error, RCPT TO: 550 退信内容如下:
你发送到Sabine.Gaiser-Jetter@sanetta.de的邮件由于以下原因被退回 : SMTP
error, RCPT TO: 550-Callback setup failed while verifying
<XXX@lycotex.com>
550-Called: 202.109.249.14
550-Sent: MAIL FROM:<>
550-Response: 553 Requested action not taken: NULL sender is not allowed
550-The initial connection, or a HELO or MAIL FROM:<> command was
550-rejected. Refusing MAIL FROM:<> does not help fight spam, disregards
550-RFC requirements, and stops you from receiving standard bounce
550-messages. This host does not accept mail from domains whose servers
550-refuse bounces.
550-Sender verification failed (Sending test bounce to XXX@lycotex.com
550 failed).