>A strange one involving IE - no it's not an option to change the web browser or security settings on the user machine
>
>This is the problem - it only affects IE and no I don't know what version my users are using - there are too many of them
>
>If I load up domain www.mfcourier.com and select online bookings I get a login screen which allows my users to login and complete a web booking - the login url is http://www.northwayweb.com/mflight/newsite/client_login/index.asp
>
>If I load up domain www.maillaposte.com which is forwarded to http://www.northwayweb.com/mflight/newsite/client_login/index.asp I get the same login screen but the user cannot login
>
>Am I correct that the maillaposte.com site has some security settings which need to be changed?

Take this with a large pinch of salt since my classic ASP is rusty:

The 'action' attribute on your form is empty - you may need to specify the actual URL so that the re-directed version (which is in a frame) posts to the right place?