Disable a User's email account

[Les Mikesell]

edwardspl at ita.org.mo wrote:
> 
>>> Dear All,
>>>
>>> The System is FC6...
>>> So, how to disbale a User's mail service ?
>>> eg : Sendmail + Dovecot ( pop3 /imap ).
>>>
>> One way is to use the aliases file to direct the mail elsewhere or to
>> /dev/null. Another is to use the virtuser table to map the users you
>> want to permit to real addresses with a catchall rejection.
>>
>> Maybe it would be easier to describe exactly what you want these users
>> to be able to do first and build an environment that provides nothing
>> else instead of starting with a general-purpose login and trying to
>> stop everything you don't want them to do.
>>
> Hello,
> 
> Is there a sample ( steps by steps ) for reference ?
> 

There's actually easier way than the ones mentioned above. In your
/etc/mail/access file put a line like:

user at domain.com  REJECT

or

user at domain.com ERROR:550 no such user here
  (if you want to control the rejection error)

or

To:user at domain.com ERROR:550 user unknown
  (if you want to permit sending but reject inbound)

Execute 'make' in the /etc/mail directory to rebuild the access database 
after the change, or you can restart sendmail with 'service sendmail 
restart' which will also do it.

Note that fedora defaults to only accepting email within the local 
machine.  If you want a working mailer you have to make a change to 
/etc/mail/sendmail.mc, removing the Addr=127.0.0.1 restriction, then 
restart sendmail.

-- 
   Les Mikesell
    lesmikesell at gmail.com