Stop mail from bouncing

[me at mattgillen.net (Matthew Gillen)]

Josh ChaitinPollak wrote:
> We recently split the ldap and mail servers onto two separate boxes  to
> make them more reliable, but this seems to have only caused more 
> problems. Should I be mirroring the ldap config on the mail server?

You should have a slave LDAP server *somewhere*.  Not being able to look
up user info causes so many problems that every  major network user-info
system (NIS, LDAP, Active Directory, etc) has explicit support for
slave/secondary servers.
--Matt