postfix and MURDER

[ph rhole oper]

Currently, postfix delivers its mail to cyrus-imapd (without murder),
through a local unix socket (using lmtp), thus avoiding authentication
of postfix to imapd (wich btw, uses GSSAPI authentication with the
clients).
Now i want to change my configuration to use MURDER.The cyrus-proxyd and
the (one and only) cyrus-imapd backend will likely be run on the same
machine* with postfix.Is there anything i should change on how postfix
be delivering mails to the cyrus backend?
Should it lmtp to another server maybe?

simon

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