Author: Drav Sloan Date: To: exim-users Subject: Re: [exim] using exim to relay to exchange
Tony Finch wrote: > > I would suggest not to use local files (which need synchronisation) and
> > to use recipient-verification with callout towards your exchange-server.
>
> This is what we do, and it's quite satisfactory. It works the same for
> Exchange and any other kind of SMTP server (of which we have several), and
> it doesn't require any special relationship with the destination server
> beyond what is needed to deliver email, e.g. no extra hole in the firewall
> for LDAP. This is an advantage for us because the Computing Service has
> little control over what departments and colleges may decide to do.
The only reason I've used LDAP outside of callouts was for the reason I
already highlighted (That a lot of the (older) exchange servers do not
have SMTP user verification, and bounce non-existant usernames after
SMTP conversations - therefore rendering callouts redundant).
