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Im running logwatch on red hat 7 it sends mails using root@localhost.localdomain however, the email from localhost.localdomain is not received at the recipient because localhost.localdomain is not registered. I want to change logwatch or mail to send from for example myname@registereddomain.com instead of root@localhost.localdomain. Can anyone help me? I have already tried changing logwatch.conf with MailFrom = myname@registereddomain.com but did not work. Logwatch is using mail (not sendmail) .

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cf/README - Who Am I?

You may define confDOMAIN_NAME in sendmail.mc:

define(`confDOMAIN_NAME', `Real.Host.Name')dnl 

P.S. After changing sendmail.mc generate new sendmail.cf.

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In your /etc/mail/sendmail.mc add the following lines at the end:

LOCAL_CONFIG
DjReal.Host.Name

Where Real.Host.Name is the real host name of the machine. $j is the macro that holds the hostname. After that rebuild sendmail.cf and restart sendmail. In Debian you do this by running sendmailconfig. In CentOS you first run /etc/mail/mail and then service sendmail restart.

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    The cleaner way is to define confDOMAIN_NAME as described in file cf/README section "who Am I". – AnFi May 9 '13 at 19:11
  • Oh some times you can't teach an old dog new tricks :) – adamo May 10 '13 at 8:28
  • @AndrzejA.Filip Please submit this as a separate answer for better visibility and sweet, sweet, delicious upvotes! – Aaron Copley Sep 29 '14 at 23:48
  • @AaronCopley done – AnFi Sep 30 '14 at 13:56

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