Thanks again for the reply. I sent off my last post before reading this
one, and it looks like we came to the same conclusion that it was my
nsswitch/system ldap settings getting in the way.
I would be inclined to agree that the problem is in libldap or other
parts of openldap (there's a reason I jumped ship from openldap to openDS).
However, the fact that smtpd never experienced the same clobbering as
proxymap still seems a bit odd. Any ideas why?
-Nick
Again, if proxymap is supposed to open read and close the file, that is not
occurring according to strace output.
This is the problem you need to solve. Postfix passes this setting to LDAP,
the rest is up to LDAP.