Hi John, I'm not really a postfix expert, but I have faced and solved similar with exim & MS-Exchange back in the days ;). Maybe it helps to find similar options in postfix.
The LDAP lookup approach - which I did attempt - turned out to be unsatisfactory because MS-Exchange (and presumaly Lotus Notes as well) had other reasons besides LDAP to reject or accept messages. There were things like "locked mailboxes" or "full mailboxes" and other weird stuff. Instead, what worked well was to configure exim to do a recipient-verify callout upon recipient of the message. (Option verify = recipient/callout). This way, whenever exim determined it had to forward a message (because it did not exist locally) it started an smtp conversation and checked the response to "rcpt to" from the exchange (aka lotus) server. If the email was accepted, it itself accepted the message, otherwise it rejected it immediately. Hope that helps a little ;) Conrad On Mon, 2016-02-29 at 18:13 -0500, John Stoffel wrote: > Hi guys, I'm running into a problem where I want to upgrade an ancient > sendmail on solaris 5.8 instance to postfix 2.6.6 running on Linux > RHEL 6.6, but I'm running into problems. > > The mailhost needs to access email for '@foo.bar.com', do a lookup > against NIS aliases, and if not found, just forward the email to a > Lotus Notes server which does some old Legacy email lists. > > This is not really a supported postfix configuration, since they feel > very strongly that email should be rejected, not accepted and then > bounced. Oh well, I can't help their feelings since I need to make > this work. > > I can do LDAP lookups against the Lotus Notes server (8.5.3) but for > the life of me I can't figure out how it translates > 'john.t...@foo.bar.com' into the info it does have, which is: > > # ldapsearch -h hdqmta.foo.bar.com -b "o=BAR_FOO" -x -LLL > '(sn=Test)' cn sn uid givenname mailaddress > dn: CN=John Test,O=BAR_FOO > sn: Test > givenname: John > mailaddress: john.stof...@bar.com > > It's really frustrating. I've tried setting up postfix to define the > 'fallback_transport' to point to my Notes server, but no luck. > > And of course the local NIS alias file is sending email to the new > Exchange server and/or the mailman server. So I've got three seperate > destinations to send email too, but only two of which are fully > defined. > > I really don't want to go back down the sendmail route if I can at all > help it. It's just so damn baroque and frustrating to use. Not only > is the language terrible, the darn M4 macro language they use for > human readable configuration is almost as bad! I always feel like I'm > doing cargo cult programming when I hack sendmail, even with the bat > book on my altar and some fresh goat's blood at hand. > > Pointers? I've been looking at the postfix.org docs, and such threads > as: > > https://sourceforge.net/p/postfixadmin/discussion/676076/thread/2670aa6a/ > https://groups.google.com/forum/#!topic/mailing.postfix.users/mhX_exJr2CQ > > And there's just no luck. > > Thanks, > John > > > _______________________________________________ > Tech mailing list > Tech@lists.lopsa.org > https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech > This list provided by the League of Professional System Administrators > http://lopsa.org/ > _______________________________________________ Tech mailing list Tech@lists.lopsa.org https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
