Invalid username when creating mailboxes

[Steve Gibson]

Hi All,

I'm in the process of moving our email system over to a 
Cyrus/OpenGroupware based system, however I'm having trouble with usernames.

Usual stats...
CentOS 4.5 - kernel 2.6.9-55.0.2.EL
cyrus-imapd-2.2.12-8.1.RHEL4
cyrus-sasl-2.1.19-5.EL4

We currently authenticate via PAM/Winbind. Thus all usernames take the 
form DOMAIN\username. This hasn't been a problem for authentication. We 
have imapd talking to saslauthd, which is speaking PAM, which talks 
Winbind. No problem, users with a domain\username login authenticate 
without a problem.

Our problem arises when we try to create an INBOX for one of these 
users. Set up for autocreate, we get the following log entry...

Oct 10 18:07:14 mail imap[11386]: login: localhost.insumo.net.au 
[127.0.0.1] insumo\sgibson plaintext User logged in
Oct 10 18:07:14 mail imap[11386]: autocreateinbox: User insumo\sgibson, 
INBOX failed. Invalid mailbox name

And we get the same problems when trying to create using cyradm. Using a 
single slash, we get an INBOX for insumosgibson, and using a double 
slash, we get an invalid mailbox name.

So, has anyone experieced this, and is there a solution? Or, is there 
any standard way to map the \ to a character that is valid in a mailbox 
name? Or is my only resort patching the source?

Thanks in advance
Steve

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