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Full Discussion: Sendmail daemon is inactive, but still i can send emails
Operating Systems AIX Sendmail daemon is inactive, but still i can send emails Post 302963801 by system.engineer on Wednesday 6th of January 2016 01:14:33 PM
Old 01-06-2016
Sendmail daemon is inactive, but still i can send emails
Hi,

I did setup sendmail on one of AIX LPARs. Its working as expected. But, would like to clarify something with you all.

I stopped the sendmail daemon on AIX LPAR, now it is inactive(&commented it on /etc/rc.tcpip ). But still, am able to send the emails even after stopping daemon.

Code:


Code:



[root@aixlpar]/>lssrc -s sendmail
Subsystem         Group            PID          Status
 sendmail         mail                          inoperative

As per my understanding;
in order to "send" mail, the mail server is not required to accept connections on port 25 or any other port. Listening mail server is used for receiving mail.

is that correct ?
if yes, so i can disable the sendmail daemon on aix forever right ?


another question is
i see some error/entry in mail logs all the time.but, I do not see this error after stopping the sendmail daemon.

Code:
"
Jan  1 10:10:10 AIXLPAR mail:info sendmail[1234567]: xxxxxx4: to=myuser.name@domain.com, ctladdr=root (0/0), delay=10:10:39, xdelay=00:02:15, mailer=esmtp, pri=35000, relay=domain.com., dsn=4.0.0, stat=Deferred: Name server: domain.com.: host name lookup failure"

Please let me know, if this error can be ignored.
Last edited by system.engineer; 01-06-2016 at 05:34 PM..
 

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LEARN ABOUT NETBSD

mailer.conf

MAILER.CONF(5)						      BSD File Formats Manual						    MAILER.CONF(5)

NAME

     mailer.conf -- configuration file for mailwrapper(8)

DESCRIPTION

     The file /etc/mailer.conf contains a series of lines of the form

     name program [arguments ...]

     The first word of each line is the name of a program invoking mailwrapper(8).  (For example, on a typical system /usr/sbin/sendmail would be
     a symbolic link to mailwrapper(8), as would newaliases(1) and mailq(1).  Thus, name might be ``sendmail'' or ``newaliases'' etc.)

     The second word of each line is the name of the program to actually execute when the first name is invoked.

     The further arguments, if any, are passed to the program, followed by the arguments mailwrapper(8) was called with.

     The file may also contain comment lines, denoted by a '#' mark in the first column of any line.

     The default mailer is postfix(1), which will also start by default (unless specifically disabled via an rc.conf(5) setting) so that locally
     generated mail can be delivered, if the ``sendmail'' setting in /etc/mailer.conf is set to ``/usr/libexec/postfix/sendmail''.

FILES

     /etc/mailer.conf

EXAMPLES

     This example shows how to set up mailer.conf to invoke the postfix(1) program:

	   sendmail	   /usr/libexec/postfix/sendmail
	   mailq	   /usr/libexec/postfix/sendmail
	   newaliases	   /usr/libexec/postfix/sendmail

     This example shows the use of the mini-sendmail package from pkgsrc in place of postfix(1):

	   # Send outgoing mail to a smart relay using mini-sendmail
	   sendmail	   /usr/pkg/sbin/mini-sendmail -srelayhost
	   send-mail	   /usr/pkg/sbin/mini-sendmail -srelayhost

     Note the use of additional arguments.

SEE ALSO

     mail(1), mailq(1), newaliases(1), postfix(1), mailwrapper(8)

     pkgsrc/mail/sendmail, pkgsrc/mail/mini_sendmail

HISTORY

     mailer.conf appeared in NetBSD 1.4.

AUTHORS

     Perry E. Metzger <perry@piermont.com>

BUGS

     The entire reason this program exists is a crock.	Instead, a command for how to submit mail should be standardized, and all the ``behave
     differently if invoked with a different name'' behavior of things like mailq(1) should go away.

BSD
								  April 10, 2010							       BSD
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