Unable to establish a secure connection to pop-sbc.mail.am0.yahoodns.net because the correct root certificate is not established

greg85740 wrote:

I just bought a new IBook Pro to replace an old unit.

I assume you mean a new MacBook Pro correct? From Apple, a brand new machine, not a recently bought older model Mac?

I loaded Microsoft 2008 office.

Some reports of issues "fresh installing" Office 2008 on a Lion (OS X 10.7) equipped Mac (all new ones have this)

http://roaringapps.com/app:2533

I am getting an error

“Unable to establish a secure connection to pop-sbc.mail.am0.yahoodns.net because the correct root certificate is not established”

Could be a issue with yahoo, or your ISP, or your new machine.

I would try again later and see if the issue clears itself up. Make sure your computer is updated via Software Update, this should give you the updated root system certificates.

Also head over to Keycahin Access>Preferences then Certificates and set Best Attempt, Best Attempt and Require Both for the three settings. This will make sure your certificates are well checked before using.

If your using a older machine, like 10.5, then there are no longer any root certificate updates from Apple. 😟

I have all the same settings as my old Mac which worked fine but the new computer is giving me this error.

So it works fine on the older machine and not the newer.

Well it could be that becaue you installed Office 2008 (same license) on another machine that there are security issues at play to prevent a cloned machine from intercepting emails.