There can be upload file size restrictions imposed by a Firewalled Web Server hosting Conquest III. When there is a Corporate Firewall such as TMG, and the Conquest III URL has a Firewall Rule e.g. http://ConquestIII.MyDomain.com.au, then a large file attachment may be rejected by the Firewall because Conquest III has to break the file into manageable pieces to transmit it, each of which requires authenticating, and in total may exceed the Firewall limit on authentications, per minute, per session (IP Address).
If necessary, solve this problem by:
•Changing the Firewall limit so that Firewall controlled Conquest III URLs can upload large files
•Using URLs for client sessions inside the Corporate Network e.g. http://ServerName:PortNumber/ that do not need the Firewall to resolve them