studio_mak's profile

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Unverified Security Certificate

For some reason I just started to receive this notification. Does anybody know what this is and what action I should take?

Valued Contributor III

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4.2K Messages

What program are you using when that pop up appears? The certificate is for pop.cox.net, so I assume some kind of email client?

Can you show the "Details" tab?

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It appears that the root certificate for Entrust is not in the CA trust store of your mail client. This link mentions that 3 months ago Entrust had requested that they be added by the common mail vendors --

https://support.mozilla.org/en-US/questions/1026811

New Contributor

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I have also been getting this issue since Friday in Mail on my Mac. This is what I'm seeing:

I've made no changes to Mail or OS X. This literally just appeared the first time I started mail in the morning.

Anyone? 

Contributor III

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521 Messages

Take a look at the February 16 question "Why is this suddenly happening?" which is very similar to your situation. 

Valued Contributor III

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4.2K Messages

Is it possible this has something to do with the certificate being for pop.cox.net while your trying to connect to pop.west.cox.net? I notice both OP and thread mentioned above are using the old pop.west.cox.net.