Linux uses mail to send external SMTP mail

Description
Linux's own mail can implement external SMTP mail. There is no need to configure the Postfix,sendmail mail server locally, it does take a bit of time to configure the package.

Realize:
1. Turn off the SendMail service or postfix service of this machine

The code is as follows	Copy Code
SendMail # Service SendMail Stop # chkconfig SendMail off Postfix # service Postfix Stop # chkconfig Postfix off

2. Modify/etc/mail.rc, add a bit like n line, specify external SMTP server address, account password, etc.

The code is as follows	Copy Code
# cp/etc/mail.rc/etc/mailrc.bak.20131113 # Cat/etc/mail.rc//content as follows Set from=123456@qq.com Set smtp=smtp.qq.com Set smtp-auth-user=123456 Set SMTP-AUTH-PASSWORD=SBSBSBSB Set Smtp-auth=login

3. Then send the message by command

The code is as follows	Copy Code
# echo Hello Word | Mail-s "title" 123456@qq.com

There is no problem sending mail under RHEL6. But under the RHEL5, has not been able to send. What is this for? You can look at the difference between mail and MAILX under RHEL6 and RHEL5.
RHEL6 under

The code is as follows	Copy Code
# Rpm-qa|grep MAILX Mailx-12.4-6.el6.x86_64 # ll/bin/mail*//mail link to mailx,mailx version 12.4 lrwxrwxrwx. 1 root 5 July 2011/bin/mail-> MAILX -rwxr-xr-x. 1 root root 390424 February 2010/bin/mailx # mail-v 12.4 7/29/08

RHEL5, we found some different

The code is as follows	Copy Code
# Rpm-qa|grep MAILX mailx-8.1.1-44.2.2 # ll/bin/mail*//MAILX link to mail command, MAILX version 8.1 -rwxr-xr-x 1 root Mail 84856 June 6 2007/bin/mail lrwxrwxrwx 1 root 4 Apr 18:03/bin/mailx-> Mail # mail-v

There is an error in running here, no-V, which means that under RHEL65, running mail and MAILX is actually a command, and the mail version is different, causing the RHEL5 Mail command to not invoke the external SMTP server. Therefore, installing a new version of MAILX can resolve this issue.

1.rhel5 install a new version Mailx

The code is as follows

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# wget FTP://FTP.SPLINE.INF.FU-BERLIN.DE/PUB/GENTOO/DISTFILES/MAILX-12.4.TAR.BZ2// Download mailx-12.4.tar.bz2, more download address http://www.filewatcher.com/m/mailx-12.4.tar.bz2.271482.0.0.html # tar JXVF mailx-12.4.tar.bz2 # CD mailx-12.4 # make # Make Install Ucbinstall=/usr/bin/install # Whereis MAILX//view MAILX program default installation location, and version MAILX:/usr/local/bin/mailx/usr/share/man/man1p/mailx.1p.gz # mailx-v

12.4 7/29/08
2. Modify the/etc/nail.rc, after the installation of the MAILX use is/etc/nail.rc rather than/etc/mail.rc. This needs attention,!!!.

The code is as follows	Copy Code
# vi/etc/nail.rc//Line end add like downlink Set from=123456@qq.com Set smtp=smtp.qq.com Set smtp-auth-user=123456 Set SMTP-AUTH-PASSWORD=SBSBSBSB Set Smtp-auth=login

2. Then send the message by command

code is as follows	copy code
# echo   Hello Word | Mailx-v-S "title" 123456@qq.com  //successfully sent, you can see a similar hint  235 2.7.0 authentication successful   >>> MAIL from:<demo@qq.com>   250 2.1.0 ok   >>> RCPT to:& lt;xxxxx@qq.com>   250 2.1.5 ok   >>> data   354 end DATA with &L T cr><lf>.<cr><lf>   >>> .   250 2.0.0 ok:queued as 9291963494   >>> quit   221 2.0.0 bye