Centos zabbix Sendmail is ready!

I have been sending emails to zabbix recently. I have not answered many questions from the Internet! Why?

Step 1 configure media type

Second, administrations-> Users-> Media

Step 3

Configure email in action

In the above three steps, why can't I send my emails!

Part 4 install sendmail

 Yum install Sendmail *

Start sendmail

Why is my email still released? check if any error is reported during startup.

Sendmail cannot start.

Opendaemonsocket: Daemon MTA: cannot bind: address already in use

As a result, this error occurs in maillog, and Baidu does not.

This problem also occurs in a foreign country. It is said that the problem may conflict with the Postfix.

Service Postfix status really started and stopped it!

Service Sendmail start OK

The second time this problem occurs, opendaemonsocket: Daemon MTA: cannot bind: address already in use

/Etc/mail/sendmail. MC is not correct

The third problem cannot be sent by email

Log errors

R549v490006354: r549v490006356: DSN: Service unavailable

Host Name Problems

The local hostname must be/Etc/sysconfig/network consistent

At the same time, the local hostname must be added to the/etc/hosts file. After the modification is completed, the mail can be sent out.

The above are my work + Study Notes for your reference only!