.gov.uk site wont work but .co.uk will

[Forti-Mon]

We have a site 

localcounciljobs.gov.uk

When going through the web profile for the LAN it doesn't work.

When we attempt this on the guest web profile it works.

I have allowed this through the web filter - added to custom categories (even though its not a blocked site through the rating anyway)

if we access localcounciljobs.co.uk (which is the same site) it works fine

But we need this gov site accessible

The error is net::ERR_CERT_AUTHORITY_INVALID

and we cannot advance - it just reloads the page.

Any ideas what im missing here?

works fine OFF the web profile

Thanks

[spoojary]

Did you check on the forward traffic logs with the source and destination? what action does it show to you and what result of it?
maybe try web filter url : with wild card :    *localcounciljobs.gov.uk*
action exempt

[salmas]

FortiGuard Web Rating results : https://www.fortiguard.com/webfilter

localcounciljobs.gov.uk - Government and Legal Organizations

localcounciljobs.co.uk - Not rated 

You can create an exemption URL rule as wildcard : *.localcounciljobs.*

You can also request a review for this site : https://www.fortiguard.com/faq/wfratingsubmit?url=localcounciljobs.co.uk

salmas