Your mail server certificate is invalid error

Anonymous
2018-03-03T15:59:06+00:00

I am attempting to use Outlook on my android phone.  When I attempt to add my email account to outlook (on my phone) I get an error that says:  Your mail certificate is invalid.  Would you like to login anyway.   PLEASE HELP!!!!

Outlook | Outlook for mobile | Outlook for Android | For business

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  1. Anonymous
    2018-04-26T15:10:49+00:00

    Yes I thought of the same thing. I would think they would mention that in the current build release though...   :(

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  2. Anonymous
    2018-04-26T15:07:28+00:00

    Can someone tell me if an update to the Outlook app removed support for TLS 1.0?  Exchange Server 2007 is only capable of TLS 1.0 and doesn't support TLS 1.1 or TLS 1.2.  Exchange Server 2010 reportedly will support TLS 1.1 and TLS 1.2 if Update Rollup 9 for Exchange Server 2010 Service Pack 3 is installed.  Has Microsoft dropped support for TLS 1.0 in the new versions of the Outlook app?

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  3. Anonymous
    2018-04-26T13:36:50+00:00

    We are having the same issue.

    Exchange 2007 - Mobile Outlook app from both Android and iPhone.

    ..mail server cert is invalid. ...

    server certificate is fine.

    OWA and Outlook desktop are working fine.

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  4. Anonymous
    2018-04-26T13:32:59+00:00

    We have not run any updates on our 2007 exchange server in about 5 years.  Anyone else in that same situation?  I'm wondering if it could be related to root certificates?

    We have not run updates recently either but the root cert for my CA is valid from 2009-2038. It must have been installed for years without issue.

    Unless it's been revoked and I'm the last to know.

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  5. Anonymous
    2018-04-26T13:23:58+00:00

    We're using DigiCert. One server is affected, the other one - not yet, though both are configured the same.

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