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Disable Outgoing Mail

 
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Old 10-28-2008
Disable Outgoing Mail
I have a Solaris 2.6 server running sendmail (Version 8.9.3p2). It actually receives email and runs the sendmail process. I need to configure it so that it continues to receive email, but disable its ability to send email out. My initial ideas was to just rename the mail and mailx binaries. But then I thought that might be a little too ugly. I then did some research and found that I could change a parameter called “DeliveryMode” to “deferred”. Apparently, this will withhold outgoing email. From there, I believe I could just create a cron job that would rm the contents of /var/spool/mqueue every couple of hours or so.

Can you tell me if this would thoroughly prevent email from going out? Or if there is a better way to do this?

The thought also occurred to me that I could alter outgoing mail so that ALL of it is directed to /dev/null or to a dummy email address (which is valid, but is really just another way to route to /dev/null). Is there a way to do this? Possibly using some config of the /etc/mail/aliases file?


Thank you very much for your assistance,
Rosko
 
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LEARN ABOUT OSF1

mailstats

mailstats(8)						      System Manager's Manual						      mailstats(8)

NAME

       mailstats - Displays statistics about mail traffic

SYNOPSIS

       mailstats [-o] [-C cffile [-f stfile]

FLAGS

       Do  not	display the name of the mailer in the output.  Use cffile as the name of the sendmail "cf" file instead of /var/adm/sendmail/send-
       mail.cf.  Use stfile as the input statistics file instead of /var/adm/sendmail/sendmail.st.

DESCRIPTION

       The mailstats command reads the information in the /var/adm/sendmail/sendmail.st file (or in the file specified with the -f flag),  formats
       it,  and  writes  it to standard output.  Note also that you can change the location of the sendmail.st file by editing its pathname in the
       sendmail.cf file.

EXAMPLES

       The format of the information is shown in the following example, in which the first field (M) contains a number that indicates the position
       of  that  mailer  in  the sendmail.cf file, starting at 0 (zero).  For example, the first mailer in the sendmail.cf file corresponds to the
       number 0 in the mailstats display, the second mailer corresponds to the number 1, and so on.  Statistics from Thu Feb 17  11:20:01  2000  M
       msgsfr	bytes_from    msgsto	 bytes_to   msgsrej msgsdis  Mailer 1	    50	       77K	  1	     3K        0       0   local 6
       43	  59K	    58		99K	    0	     0	   smtp  ============================================================  T	93
       136K	   59	      102K	   0	   0 The fields in the report have the following meanings: Indicates the position of the mailer in
       the sendmail.cf file.  Indicates the number of messages received by the local machine from the indicated mailer.  Indicates the	number	of
       bytes  in  the  messages  received  by  the  local machine from the indicated mailer.  Indicates the number of messages sent from the local
       machine using the indicated mailer.  Indicates the number of bytes in the messages sent from the local machine using the indicated  mailer.
       Indicates the number of rejected messages.  Indicates the number of discarded messages.	Indicates the name of the mailer.

       If sendmail transmits mail directly to a file, such as the dead.letter file or an alias target, the message and byte counts are credited to
       the prog mailer, as defined in the sendmail.cf file.  However, mailstats will still default to var/adm/sendmail/sendmail.st.

FILES

       Specifies the command path Contains system statistics Contains configuration information for sendmail

RELATED INFORMATION

       Commands: sendmail(8) delim off

																      mailstats(8)