Bowie Bailey writes:

> This connection worked:
>     authdaemond: received userid lookup request: ttest109@exam...
>     authdaemond: authldap: trying this module
>     authdaemond: selected ldap protocol version 3
>     authdaemond: binding to LDAP server as #REMOVED#
>     authdaemond: using search filter:
> (&(objectClass=CourierMailAccount)(mail=ttest109@exam...))
>     authdaemond: one entry returned, DN:
> mail=ttest109@exam...,cn=Users,dc=example,dc=net
>    
> This connection (5 seconds later) did not:
>     authdaemond: received userid lookup request: ttest109@exam...
>     authdaemond: authldap: trying this module
>     authdaemond: using search filter:
> (&(objectClass=CourierMailAccount)(mail=ttest109@exam...))
>     authdaemond: ldap_search_st() failed
>     authdaemond: authldap: TEMPFAIL - no more modules will be tried
>
> Any ideas?
>
> If it makes any difference, the backend is the Fedora Directory Server
> (v7.1, not the open source version).

You'll need to look at the server's logs and see what they say.

Also, search for any intermediate firewalls.