Disable authentication for submission service

[Dan Conway]

Hello,

Is it possible to disable the requirement for authentication on the 
submission service? I'm trying to require authentication for all, except 
for a handful of IP addresses.

Thank you.


ehlo test.com
250-aaa
250-AUTH PLAIN LOGIN
250-BURL imap
250-CHUNKING
250-DSN
250-ENHANCEDSTATUSCODES
250-SIZE
250 PIPELINING
MAIL FROM:<test at test.com>
530 5.7.0 Authentication required.