sendmail, aliases and NIS+
jcarro10 at sprintspectrum.com
Fri Mar 29 04:56:18 EST 2002
Hhhmmm.... I wasn't familiar with the -dx.y option. Thanks!
When I run sendmail -bt -dx.y, it tells me that NIS is supported, but
there's no mention of NISPLUS.
Presently the smarterhost we've been using is a mail server operated by
another group within our company. I don't think it would be a good
assumption to say that that mail server would know what to do with a message
addressed simply "jcarro10".
So it appears these are my options:
1. Get the source for sendmail and compile in NIS+ support.
2. Get an alternate MTA (eg, Postfix) and make sure that NIS+ support is
3. Set up sendmail on the Linux hosts as "nullclient" (as per your
suggestion) and configure a Solaris machine to act as a mail relay. (This
would require buy-in by the rest of my group.) Again, this could be
Sendmail, or it could be Postfix, or whatever.
4. Manage /etc/aliases on all the Linux hosts with something like rsync.
(Er, wasn't the whole point of NIS+ to avoid these sorts of workarounds?)
5. Some other solution that I haven't considered yet.
> -----Original Message-----
> From: Dirk Wetter [mailto:dirkw at rentec.com]
> Sent: Thursday, March 28, 2002 10:32 AM
> To: Carroll, Jim
> Cc: Linux-Nisplus (E-mail)
> Subject: Re: sendmail, aliases and NIS+
> i think i ran into this, too. what i did: configure your Linux box to
> be a "nullclient", so that the mailserver, which should be a "real"
> NIS+ client does the alias expansion. confusing is that
> sendmail -bt -dx.y
> reports to support NISPLUS.
> On Thu, 28 Mar 2002, Carroll, Jim wrote:
> > I'm just now noticing a peculiar problem.
> > On a Solaris8 NIS+ client, sendmail appears to
> > from the aliases (mail_aliases) table.
> > On a Linux (2.4.7-10) NIS+ client, sendmail appears to have
> no such clue.
> > Yes, the following entry is in the Linux nsswitch.conf file:
> > aliases: files nisplus
> > The test user (myself) doesn't exist in /etc/passwd (or
> /etc/shadow), but
> > *does* exist in the NIS+ tables of same. And yet, when (as
> root) I do a
> > simple "echo hello | mail jcarro10", it ends up dumping it
> to the local
> > /var/spool/mail/jcarro10 file.
> > Yes, the following entry exists in the NIS+ aliases table:
> > jcarro10: jcarro10 at sprintspectrum.com
> > Yes, if I do "echo hello | mail
> jcarro10 at sprintspectrum.com", the mail ends
> > up going where I want it to.
> > Sendmail just doesn't seem to be NIS+ aware.
> > Suggestions where to start looking?
> > Jim
> Dirk Wetter @ Renaissance Techn.
> mailto:<dirkw at rentec dot com>
More information about the linux-nisplus