offering limited pop access

[Ian Eiloart]

Hi,

I offer an IMAP service to 12000 users, but we don't offer POP3.

However, we have a blind person who has a braille computer, with POP3 
client, but no IMAP client.

I've configured a perdition proxy which can give him POP, but not IMAP 
access. However, we're moving toward using Cyrus proxyd front end, with 
LDAP authentication (through SASL).

Is there a way I can configure my murder cluster to perform a different 
IMAP lookup for POP3 authentication, compared to IMAP authentication. Or, 
is there some other way that I can restrict POP3 access to certain users?

I've got configuration files at
/local/cyrus-sasl-2.1.22/lib/sasl2/imap.conf
which just says:
    pwcheck_method: saslauthd
    mech_list: plain
I presume I need a pop.conf file that's similar, but can't find any 
documentation.

and
/local/cyrus-sasl-2.1.22/etc/saslauthd.conf
which specifies how to access the LDAP servers.

I want everything the same, but with a different value for ldap_filter. Can 
I just override this in pop3.conf? Or do I set sasl_ldap_filter my cyrus 
configuration, instead?

-- 
Ian Eiloart
IT Services, University of Sussex
x3148