preauth with lmtpproxyd

[Andrew Morgan]

I'm testing out cyrus murder with v2.2.12 and I noticed that lmtpproxyd 
doesn't seem to support the -a (preauth) option that the regular lmtpd 
does.

On my standalone cyrus system, I use lmtpd -a to accept mail from our 
campus mail relays running postfix, and I use tcpwrappers to block all 
connections except the mail relays.

I attempted to use a similar configuration on my test frontend server 
running lmtpproxyd, but the -a option is not supported.

Am I going about this wrong?  Is there a different or better way to accept 
mail over the network using lmtp in a murder?

Thanks,
 	Andy