‎Outlook is caching old expired email server SSL

dancingfarmanimals 0

We want to enable SSL for our email account. The SSL for the mail server was recently renewed, but client-side desktop Outlook is still hanging onto the old, now expired certificate, causing issues as one would expect. How can one purge desktop Outlook's email server SSL cache and ensure that it's seeing the new, valid certificate? Thanks.

Faery Fu-MSFT 18,971 Reputation points Microsoft Vendor

2023-04-24T02:55:23.8533333+00:00

Hi @dancingfarmanimals ,

We are working on your issue and will let you know below if there is an update.
Faery Fu-MSFT 18,971 Reputation points Microsoft Vendor

2023-04-24T06:58:03.5366667+00:00

Hi @dancingfarmanimals ,

Are you using an exchange mail server? What is the version number?

Also, is it a commercially issued certificate?
dancingfarmanimals 0 Reputation points

2023-04-24T15:16:24.0633333+00:00

Hi there. The mail server in this case is Smartermail. The SSL certificate is from GoDaddy. Thanks.
Faery Fu-MSFT 18,971 Reputation points Microsoft Vendor

2023-04-25T07:30:54.3266667+00:00

Hi @dancingfarmanimals ,

Based on my research, this seems to be a server-side issue, I personally recommend that you restart the server to see if that fixes the problem, if you still have problems, I suggest you contact the support of the certificate

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‎Outlook is caching old expired email server SSL

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