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jmazaredo
Asked: 2014-03-12 01:27:13 +0800 CST

I'm sending email via command line using linux accounts but it is adding @mail.hostname.com

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mail -s "subject" $user

I'm sending email via command line using linux accounts but it is adding @mail.hostname.com

so the username becomes [email protected]

Is there are way that it just email using local accounts without @mail.hostname.com or change it automatically using @hostname.com

cd /home/dir/11   
du -m --max-depth=1 | sed 's/[./]//g' | while read space user 
do
    if [ $space -gt 100 ]
                   then

        mail -s "using over 100MB " $user <<MAIL
$user:
You are now using $space MB in your home directory.
The total amount of diskspace allowed is 100 MB.

MAIL
  fi

done

It is adding the hostname of the machine while sending mail [email protected] where it should be [email protected] , i cant change the local machine hostname since there are some other connections using it. The mail is bouncing back since address is wrong:

This is the Postfix program at host mail.hostname.com.

I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to

If you do so, please include this problem report. You can delete your own text from the attached returned message.

               The Postfix program

(expanded from ): unknown user: "user1"

linux

1 Answers

  1. Best Answer

    Please check this document : http://www.postfix.org/ADDRESS_REWRITING_README.html#generic

    Here's excerpt from link.

    First you need add generic map table to main.cf.

      /etc/postfix/main.cf:
      smtp_generic_maps = hash:/etc/postfix/generic

    Then put your mappings ( how outgoing mail will be rewritten ) into "/etc/postfix/generic" . Left hand side is adress to rewrite, the other is the address you need ...

      /etc/postfix/generic:
      [email protected]               [email protected]
      [email protected]               [email protected]
      @localdomain.local                  [email protected]

    It's also possible to use regexps..

      /etc/postfix/main.cf:
      smtp_generic_maps = regexp:/etc/postfix/generic_re

    In /etc/postfix/generic_re :

      /^(.*)@mail.hostname.com$/   ${1}@hostname.com

    after that you should reload postfix

     postfix reload
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