Sendmail configuration.

Is it possible to configurate sendmail so it gives root al mail with wrong adress. (For exampel mail to users which not exist) Instead of replying with the MailerDemoan message???

How do I get it to work this way???
Who is Participating?

Improve company productivity with a Business Account.Sign Up

ahoffmannConnect With a Mentor Commented:
It's not a good idea to alias root (root: pucko abcdef).

In your /etc/ set:


Define the postmaster as root.
puckoAuthor Commented:
It's probably a good ansver, but can you tell me how to do that??? I don't know what to change, and where.

Build your data science skills into a career

Are you ready to take your data science career to the next step, or break into data science? With Springboard’s Data Science Career Track, you’ll master data science topics, have personalized career guidance, weekly calls with a data science expert, and a job guarantee.

Check your aliases file, in this place you define alias for addresses. By the way, there is usually a rule that re-routes all the MailerDaemon message to somebody of your choice already included in this file. MOre info in your man pages for sendmail and aliases
puckoAuthor Commented:
You can se my aliasesfile here. What is wrong in in???
And the man-pages for aliases doesn't say a ****!
(Have tou cheked them ??)

#      @(#)aliases      8.2 (Berkeley) 3/5/94
#  Aliases in this file will NOT be expanded in the header from
#  Mail, but WILL be visible over networks or from /bin/mail.
#      >>>>>>>>>>      The program "newaliases" must be run after
#      >> NOTE >>      this file is updated for any changes to
#      >>>>>>>>>>      show through to sendmail.

# Basic system aliases -- these MUST be present.
MAILER-DAEMON:      postmaster
postmaster:      root

# General redirections for pseudo accounts.
bin:            root
daemon:            root
games:            root
ingres:            root
nobody:            root
system:            root
toor:            root
uucp:            root
webmaster:      root

# trap decode to catch security attacks
decode:            root

# Person who should get root's mail
root:            pucko       abcdef
Yes I checked it, and I agree with ahoffman, but before you modify get rid of the alias for root and give it a try.
puckoAuthor Commented:
Just a line with OPpstmaster????

It doesn't work!
puckoAuthor Commented:
OK! I have a # before root: pucko now....

It doesn't work anyway...
Please, get rid of the alias for root, you have to restart your sendmail daemon and make sure it reads the correct files, also that it rebuilds the aliases database, if you try using the -v option (verbose) you can follow what is happening and maybe find out what is going on.
puckoAuthor Commented:
I have removet the alias a loong time ago...
puckoAuthor Commented:
How do I Kill and restart my sendmaildeamon whithout doing a reboot????
About the aliases part. just postmaster: root in the file don't work.
if you have a SYS-V style UNIX:

  kill -9 'ps -ef | grep sendmail | awk '{print $2}'`

or if BSD style UNIX:

  kill -9 'ps -ax | grep sendmail | awk '{print $1}'`

then restart senmail as it will do by your rc* scripts.

It's less cryptic if you hace a rc script (usually in /etc/rc.d/) which starts and stops sendmail, then you can do:

  cd /etc/whereever_your_script_are
  ./sendmail_script stop
  ./sendmail_script start
puckoAuthor Commented:
But that you sai about set OPpostmaster.
Do you mean that I just shall have a row OPpostmaster ??
Nothing more???
(It doesn't eork for me...)
Do you have the ErrorMode option set in your, like:

puckoAuthor Commented:
Don't think so. I put my in

Mabe it easier for you to answer my question if you see it.

  #O ErrorMode=print
  #O Postmaster=root
  O ErrorMode=mail
  O Postmaster=root

I'm not shure (for now) if
  #O PostMasterCopy=Postmaster
must also be enabled (by removing the initial #).

TAKE CARE, your was generated by m4. So there is a master file, probaly sendmail.m4, where was generated from. You should make changes there too.
puckoAuthor Commented:
It dosn't work. The O Postmaster=root that was in the file was something I tested before and sendmail doesn't like it.....

But anyway, The problem is solved. I took a look at

And figured it out by my self.

Thank's for trying!

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.