Internet Security Warning

[alexyeoh_leo85]

Dear All,

I don't know this problem is what problem. when i sending email, my pc alway pop out this message, and i m don't know what happening.
see belows messages. so sorry i don't know how to upload pictures.

- The server you are connected to is using a security certificate that could not be verified.
A certificate chain processed, but terminated in a root certificate which is not trusted by
the trust provider.

Do you want continue using this server.

Press Yes or No.

Thank you

[alexyeoh_leo85]

Im used outlook express 6.0 , windows xp.

my email is need to used pop3 and smtp. but don't know why, everytime i want to sending mail, it will be out this message. and i need to click yes, then the mail can be sending out. if i click no, my email can't sending out.

so, this is what happening on my email?