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Operating Systems Solaris How do I configure sendmail to block all OUTGOING mail FROM one userid TO the world? Post 302403801 by jim mcnamara on Sunday 14th of March 2010 08:44:12 PM
Old 03-14-2010
You did block/stop/delete whatever caused the one account to become a spambot, right? Othwerise the problem will spread to other user accounts. And this answer becomnes pointless.

You can employ setfacl to block execute access for the sendmail image for use by one specific username. I would completely disable that account, and move it to the nobody group if you have one. I would also question any file that user had write acces to. Then give the user another, new account.
 

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

NAME
userdel - Delete a user account and related files SYNOPSIS
userdel [-r] login DESCRIPTION
The userdel command modifies the system account files, deleting all entries that refer to login. The named user must exist. The options which apply to the userdel command are: -r Files in the user's home directory will be removed along with the home directory itself and the user's mail spool. Files located in other file systems will have to be searched for and deleted manually. FILES
/etc/passwd - user account information /etc/shadow - secure user account information /etc/group - group information CAVEATS
userdel will not allow you to remove an account if the user is currently logged in. You must kill any running processes which belong to an account that you are deleting. You may not remove any NIS attributes on an NIS client. This must be performed on the NIS server. SEE ALSO
chfn(1), chsh(1), passwd(1), groupadd(8), groupdel(8), groupmod(8), useradd(8), usermod(8) AUTHOR
Julianne Frances Haugh (jockgrrl@ix.netcom.com) USERDEL(8)
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