Unauthorised Content in Webmail

[#1]

Had that little sign again today in Webmail - padlock with exclamation mark on it and 'Unauthorised Content' by it.
Wonder if there is a problem? The e-mail was one from another PN customer.

[#2]

Not sure what sign you're referring to poppy. Is there a thread somewhere else discussing this? Failing that, perhaps you could attach a screen grab.

[#3]

It was the secure padlock icon where I saw it (as described above), bottom right of screen. It is now gone so if I see it again I will take a snip.