MDaemon Log error: aa@*.com must check for new mail

Recently in the SMTP log to see an error, to share with you. Intercepted a section of the log, the error message is as follows:

The VIN. Users use the BIS to bind their own corporate post office. Sending a message is an error vin*@*.cn check for new mail A, this means check to see if there are any new messages. See this error explanation, should immediately think of MDaemon user authentication method has a pop before SMTP authentication, this kind of authentication method in simple language expression is: Before sending a message, the default valid time is 5 minutes. To remove this specific action: Security---Security settings---Pop before the SMTP---Cancel Check the sender must be able to access the mailbox, the default is 5 minutes. Please see screenshot below:

In other words, you can also resolve the problem by receiving the message, or you must not cancel the authentication method.

This article is from the mail server and network Management notes blog, please be sure to keep this source http://19281928.blog.51cto.com/2327194/669096

See more highlights of this column: http://www.bianceng.cnhttp://www.bianceng.cn/Servers/Mail/