A. Reasons for not sending emails
1. The computer room has blocked your IP external port 25 (most computer rooms do this), or your own firewall has limited the external port 25.
You can test it like this:
Enter in Start--Run
telnet smtp. 25
Normally, you will see the prompt message in English.
If the IP is blocked by the computer room, you can only contact the computer room for processing.
2. The dns of your email software are not set properly, such as the dns server in the imail is not set. You can open the imail management interface at the beginning ---Imail-IMail Administrator, and enter the DNS IP in localhost--servicecs--SMTP----"Domina Name address". Multiple IPs can be separated by spaces. The DNS IP should be the same as the DNS IP set in TCP/IP in the network card attributes.
3. Send messages using the wrong email. If the admin user using winwebmail cannot send messages, he should bind the domain name in the user area before sending messages.
4. It may be caused by antivirus software, such as Mcafee, Rising, etc. You can close the antivirus software and restart the email software and try again.
B. The reason why the email software has been installed, but the email cannot receive the letter.
Reason 1, the Mx record of the domain name is not parsed
The following is an explanation of the mydns function of Xinwang:
For example, domain name
First, you need to parse an A record in the A record to your server IP.
Then, in MX parsing, parse, write host name, pay attention! ! !
It is a parsed MX record, not a parsed MX record, which is where ordinary users make the most mistakes.
Reason 2, firewall or port conflict
The email address requires port 25,110. Please check whether this port is opened and whether it conflicts with the smtp port in IIS. Smtp in IIS can use port 26.
Reason 3, imail has not been cracked successfully, or imail's smtp service has not started. If you are sure that imail's smtp service has been started, it can be run in dos
netstat -an
Normally, you should see port 25 listening. If there is no port 25 and the SMTP service has been started, it is likely that the imail was not cracked successfully. In this case, you can only reinstall the system to restore the imail.
1. The computer room has blocked your IP external port 25 (most computer rooms do this), or your own firewall has limited the external port 25.
You can test it like this:
Enter in Start--Run
telnet smtp. 25
Normally, you will see the prompt message in English.
If the IP is blocked by the computer room, you can only contact the computer room for processing.
2. The dns of your email software are not set properly, such as the dns server in the imail is not set. You can open the imail management interface at the beginning ---Imail-IMail Administrator, and enter the DNS IP in localhost--servicecs--SMTP----"Domina Name address". Multiple IPs can be separated by spaces. The DNS IP should be the same as the DNS IP set in TCP/IP in the network card attributes.
3. Send messages using the wrong email. If the admin user using winwebmail cannot send messages, he should bind the domain name in the user area before sending messages.
4. It may be caused by antivirus software, such as Mcafee, Rising, etc. You can close the antivirus software and restart the email software and try again.
B. The reason why the email software has been installed, but the email cannot receive the letter.
Reason 1, the Mx record of the domain name is not parsed
The following is an explanation of the mydns function of Xinwang:
For example, domain name
First, you need to parse an A record in the A record to your server IP.
Then, in MX parsing, parse, write host name, pay attention! ! !
It is a parsed MX record, not a parsed MX record, which is where ordinary users make the most mistakes.
Reason 2, firewall or port conflict
The email address requires port 25,110. Please check whether this port is opened and whether it conflicts with the smtp port in IIS. Smtp in IIS can use port 26.
Reason 3, imail has not been cracked successfully, or imail's smtp service has not started. If you are sure that imail's smtp service has been started, it can be run in dos
netstat -an
Normally, you should see port 25 listening. If there is no port 25 and the SMTP service has been started, it is likely that the imail was not cracked successfully. In this case, you can only reinstall the system to restore the imail.