[求助] IMAIL 出现SMTP 421错误

skydem

如题，出现SMTP 421错误，发不出信，但能收到，已经试过，看了帖子，没看出来有什么问题，请大家帮帮忙。<br>
<br>
<br>
IMAIL 7.05版<br>
附图<br>
<IMG onmouseover="javascript:if(this.width>520)this.width=520;" src="../leadbbsfile/fileType/jpg.gif" onload="javascript:if(this.width>520)this.width=520;" align=absmiddle border=0>此主题相关图片<br>
<IMG onmouseover="javascript:if(this.width>520)this.width=520;" style="CURSOR: hand" onclick=javascript:window.open(this.src); src="../leadbbsfile/upload/2005/04/14/154538.jpg" onload="javascript:if(this.width>520)this.width=520;" align=absmiddle border=0><br>
<img src="../leadbbsfile/UBBicon/em02.GIF" width=20 height=20 align=absmiddle border=0>

skydem

我的IMAIL在客户端收信时显示到PASS时提示重新输入口令，但口令是正确的，无法登录邮箱。而且发送的时候提示 SMTP 451错误<br>
<IMG onmouseover="javascript:if(this.width>520)this.width=520;" src="../leadbbsfile/fileType/jpg.gif" onload="javascript:if(this.width>520)this.width=520;" align=absmiddle border=0>此主题相关图片<br>
<IMG onmouseover="javascript:if(this.width>520)this.width=520;" style="CURSOR: hand" onclick=javascript:window.open(this.src); src="../leadbbsfile/upload/2005/04/15/104319.jpg" onload="javascript:if(this.width>520)this.width=520;" align=absmiddle border=0><br>