Some question about murder and ptloader

[Carlos R Laguna]

Hello everyone, for a couple weeks i had been reading the documentation 
and old mail in the list archives. So far so good mupdate can 
authenticate through sasl using a ldap backend, at the moment i have 1 
frontend, 1 backend, and the mupdate(master) all 3 are running cyrus 
2.5.7. However there are stuff that i can hardly grasp, so hopefully any 
of you can cast some light in the next 3 points.

1 There is a know limitations for the uses of spaces on ldap parameters? 
What i mean is:

/etc/saslauthd.conf

Case 1
ldap_bind_dn: uid=cyrus-admin,ou=services,dc=example,dc=org
Case 2
ldap_bind_s: uid=cyrus-admin,ou=special users,dc=example,dc=org

In case 1 both testsaslauthd and mupdatetest can authenticate just fine, 
but in case 2 only testsaslauthd will.

2 In a murder deployment like this, should ptloader be running on all 
server or just a part of it, backend? frontend? (M)mupdate?

3 In my attempt to be consistent through the murder setup i replicated 
some portion of the config in all 3 servers, overkill ?
e.g
sieve_extensions: fileinto reject envelope body vacation imapflags 
notify include regex subaddress relational copy date index
allowallsubscribe: 0
allowusermoves: 1
altnamespace: 1
hashimapspool: 1
anysievefolder: 1
fulldirhash: 0
sieveusehomedir: 0
sieve_allowreferrals: 0
lmtp_downcase_rcpt: 1
lmtp_fuzzy_mailbox_match: 1
username_tolower: 1
deletedprefix: DELETED
delete_mode: delayed
expunge_mode: delayed
postuser: shared

Thank all of you for your time. Best regards

Charles