Beyond rtcyrus2 (sendmail integration)
mills at cc.umanitoba.ca
Mon Dec 4 09:09:30 EST 2006
On Sun, Dec 03, 2006 at 06:57:18PM -0800, Jo Rhett wrote:
> Gary Mills wrote:
> >On Sun, Dec 03, 2006 at 05:33:15PM -0800, Jo Rhett wrote:
> >>Gary Mills wrote:
> >>>We've had excellent sendmail/cyrus integration for years, with
> >>>35,000 users. It's done by having all users in the NIS map on
> >>>the mail server. No modification to sendmail is necessary because
> >>>getpwnam() returns the passwd entry for the user. Users can't log
> >>>in to the mail server, of course, because PAM rules prevent that.
> >>>The same thing could be done with other user databases, such as
> >>>LDAP. Why would you ever need a different form of integration?
> >>We've done the same by putting all user accounts into virtusertable with
> >>the no-recursion option.
> >>That said, it does require something to take user accounts and export
> >>them into virtusertable/nis maps/etc. So this approach is technically
> >>superior to what you and I are doing.
> >Well, unless you are offering only e-mail service, you have to do that
> >anyway. We offer many services to all, or subsets, of our users.
> >Having them all in one database is very convenient. For example, we
> >have a web portal that authenticates users from the same database as
> >the e-mail server.
> Yes, but again you're not making a good argument for why they should be
> forced to create a centralized database if they don't have one already.
> Yes, if you already have all this information in another form you don't
> have this problem today. So you don't need this project.
Okay, that's fine. Perhaps this project could state that there are
alternatives that may be better in some environments.
> This project would help people without that centralized database, or who
> want updates to the good user list to happen in realtime rather than
> after an export of data.
In our case there's no export involved. All of the information comes
from the same SQL database. Somebody reinventing this scheme today
would probably use LDAP instead.
-Gary Mills- -Unix Support- -U of M Academic Computing and Networking-
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