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This article is about how to configure a sendmail server in RedHatLinux AS3. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Installation of 1.sendmail

If the user has already installed the sendmail 8.12 service when RedHatLinux AS3 is installed by default. The installation process can be ignored. For related information, please refer to the documentation in redhat CD.

If not, install the sendmail service as follows:

/ / check to see if sendmail is installed

# rpm-qa | grep sendmail

/ / put the first installation CD of RedHatLinux AS3 into the CD drive and mount it.

# cd / mnt/cdrom

/ / enter the RedHat/RPMS directory of the CD

# cd/mnt/cdrom/RedHat/RPMS

/ / install the required software packages

# rpm-ivh sendmail-8.12.10-1.i386.rpm

/ / put the third installation CD of RedHat Linux9 into the CD-ROM drive and mount it

# cd / mnt/cdrom

/ / enter the RedHat/RPMS directory of the CD

# cd/mnt/cdrom/RedHat/RPMS

/ / install the required software packages

# rpm-ivh sendmail-cf-8.12.10-1.i386.rpm

# rpm-ivh sendmail-doc-8.12.10-1.i386.rpm

/ / eject the CD

# cd;eject

two。 Verify whether the forward and backward parsing of DNS SERVER is successful

To make your new e-mail server work properly, you must first solve the DNS problem. Add the hostname and ip address of your e-mail server to DNS and use nslookup to confirm:

[root@AS3 /] # nslookup-sil mail.supermaster.com

Server: 192.168.0.111

Address: 192.168.0.111#53

Name: www.supermaster.com

Address: 192.168.0.111

You should also try reverse domain name resolution, which plays an important role in preventing email delays. Nowadays, most mail servers send reverse domain name resolution as mail.

Part of the certification. So use your ip address to see if the reverse domain name resolution is correct.

[root@AS3 /] # nslookup-sil 192.168.0.111

Server: 192.168.0.111

Address: 192.168.0.111#53

111.0.168.192.in-addr.arpa name = www.supermaster.com.

111.0.168.192.in-addr.arpa name = mail.supermaster.com.

111.0.168.192.in-addr.arpa name = ftp.supermaster.com.

111.0.168.192.in-addr.arpa name = ssL.supermaster.com.

3. Configure the sendmail service

> > 1. Listen on the smtp port of this machine

The default installation of RedHatLinux AS3 has enabled the SMTP service to run locally.

You can use netstat-nl to see all the ports that the daemon listens on. Note this line: 127.0.1 SMTP 25, which indicates that the sendmail service is already listening on the native 25 (port).

Port:

[root@AS3 /] # netstat-nl

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

Tcp 0 0 0.0.0.0 32768 0.0.0. 0 LISTEN

Tcp 0 0 127.0.0.1 32769 0.0.0.0 * LISTEN

Tcp 0 0 0.0.0.0 2049 0.0.0.015 * LISTEN

Tcp 0 0 0.0.0 0 32770 0.0.0 0 v * LISTEN

Tcp 0 0 0.0.0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0

Tcp 0 0 0.0.0. 0. 0. 0. 0. 0. 0. 0. 9. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 9. 0. 0. 0. 0. 0. 0. 0. 9. 0. 0. 0. 0

Tcp 0 0 0.0.0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 00

Tcp 0 0 0.0.0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 01. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 15. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0. 0

Tcp 00 0.0.0.0 6000 0.0.0.015 * LISTEN

Thank you for reading! This is the end of the article on "how to configure the sendmail server in RedHatLinux AS3". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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