Re: Cron Mailing

[Matthew Seaman]

On Thu, May 13, 2004 at 12:51:34PM +0200, Ian Barnes wrote:
 Hi,
 
 I am trying to find out if something is possible. On our servers we would
 like all mail from cron not to come from [EMAIL PROTECTED] but rather from say
 [EMAIL PROTECTED]

I assume you still want the jobs to be run by root though, otherwise
you could just use the 'ian' account's crontab file.
 
 Is this possible? Am i making sense :P ??

Sure.  'root' always used to be special cased so that emails from
there don't go through address rewriting.  But since sendmail-8.10
that's no longer the case.  Just use the normal genericstable
mechanisms to rewrite the sender address. Read through the bits of
/usr/share/sendmail/cf/README that deal with genericstable first, but
essentially what you need is:

i) Make sure your /etc/mail/`hostname`.mc file contains:

FEATURE(genericstable, `hash -o /etc/mail/genericstable')dnl

   if not, add it to the .mc file and rebuild sendmail.cf and
   restart sendmail in the usual way:

# cd /etc/mail
# vi `hostname`.mc
# make all install restart-mta

   ii) Edit the /etc/mail/genericstable file to set up the e-mail
   address mappings you need.  That will be, minimally:

rootian

   and then process that into the .db hash format sendmail will
   read:

# make

  iii) That's all you need to do.  Send some e-mails as root to test.

Nb. this rewrites all e-mail from [EMAIL PROTECTED], not just the stuff
emitted by cron. If you want to do that, it's going to be much harder
to achieve.

-- 
Dr Matthew J Seaman MA, D.Phil.   26 The Paddocks
  Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614  Bucks., SL7 1TH UK


pgp0.pgp
Description: PGP signature

RE: Cron Mailing

[Ian Barnes]

Hi,

Thanks for the reply. Yes we want cron to be run as root. Okay, we are
running exim, so I will see what i can do.

Thanks

Ian

 -Original Message-
 From: Matthew Seaman [mailto:[EMAIL PROTECTED]
 Sent: 13 May 2004 01:16 PM
 To: Ian Barnes
 Cc: [EMAIL PROTECTED]
 Subject: Re: Cron Mailing


 On Thu, May 13, 2004 at 12:51:34PM +0200, Ian Barnes wrote:
  Hi,
 
  I am trying to find out if something is possible. On our
 servers we would
  like all mail from cron not to come from [EMAIL PROTECTED] but
 rather from say
  [EMAIL PROTECTED]

 I assume you still want the jobs to be run by root though, otherwise
 you could just use the 'ian' account's crontab file.

  Is this possible? Am i making sense :P ??

 Sure.  'root' always used to be special cased so that emails from
 there don't go through address rewriting.  But since sendmail-8.10
 that's no longer the case.  Just use the normal genericstable
 mechanisms to rewrite the sender address. Read through the bits of
 /usr/share/sendmail/cf/README that deal with genericstable first, but
 essentially what you need is:

 i) Make sure your /etc/mail/`hostname`.mc file contains:

 FEATURE(genericstable, `hash -o /etc/mail/genericstable')dnl

if not, add it to the .mc file and rebuild sendmail.cf and
restart sendmail in the usual way:

 # cd /etc/mail
 # vi `hostname`.mc
 # make all install restart-mta

ii) Edit the /etc/mail/genericstable file to set up the e-mail
address mappings you need.  That will be, minimally:

 rootian

and then process that into the .db hash format sendmail will
read:

 # make

   iii) That's all you need to do.  Send some e-mails as root to test.

 Nb. this rewrites all e-mail from [EMAIL PROTECTED], not just the stuff
 emitted by cron. If you want to do that, it's going to be much harder
 to achieve.

 --
 Dr Matthew J Seaman MA, D.Phil.   26 The Paddocks
   Savill Way
 PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
 Tel: +44 1628 476614  Bucks., SL7 1TH UK


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