IP Range in Configuration Document

On our server configuration document, we only allow connections from specific smtp internet hostnames/IP addresses. I know that individual IP addresses are entered withing square brackets . But does anyone know how to enter an IP range in this field? I’ve been given an IP range of 64.18.0.0 - 64.18.15.255. Does this mean I have to enter [64.18.0.]; [64.18.1.]; [64.18.2.] right up to [64.18.15.] in that field on the SMTP Inbound Controls tab?

Thanks.

Subject: Try this…

The notation below should do what you want:

[64.18.0-15.*]