Problems Linking Directly to a product

[twalls]

I am linking directly to products from outside actinic. I have set this up and it appears to work fine, however after a few days the linking does not work and I get an htpp 404 not found.

If I enter the site through actinic then the product(s) is there.

This has happened twice now and I am puzzled to how it works initially then stops working.

Any ideas?

[Duncan Rounding]

Please post your link details.

[twalls]

Link Details

The outside link is:

www.justspas.co.uk/filters

choose a manufacturer and you will see a list of filters, click the buy link which should take you to the actinic site.

Thanks.

[Duncan Rounding]

There appears to be a redirection going on.
The link I chose was:
http://www.mtsdistribution.co.uk/cgi...335&NOLOGIN=1;
which redirects to:
http://www.justspas.co.uk/filters/Spa_Filters.html
to confuse matters further the online shop at justspas.co.uk points to:
http://www.spaaccessory.co.uk/

??