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
    2018-04-25T21:23:27+00:00

    I am having same issues trying to re setup talk talk email account after Outlook app on android downloaded from play store stated to repeatedly  ask me to re enter my password and repeatedly failed to connect to email server. Talk Talk account has not changed and I can access it via web no problem.  Started this evening for no apparent reason I can identify.

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  2. Anonymous
    2018-04-25T20:55:44+00:00

    I am having the same issues as well. It just started this afternoon.  We are running Exchange 2007 and any user that is trying to use the Outlook APP gets the ssl error.  I'm instructing all users to switch over to the APPLE mail client until there is a work around.

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  3. Anonymous
    2018-04-25T20:15:31+00:00

    Yes we are running Exchange 2007 as well.

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  4. Anonymous
    2018-04-25T20:06:21+00:00

    Experiencing the same issue.  As of April 25th, at least 20 users have complained of email connection issues.

    On Android - Login Error - Your mail server certificate is invalid.  Would you like to log in anyway?

    On iPhone - Connection Warning - Your mail server certificate is invalid.  Would you like to login anyway?

    If the users taps Login, it will just keep prompting them with the same pop-up to login or cancel.

    The certificate is valid and was renewed/replaced March 20th 2018.  We are using Exchange 2007 and ISA server.  This is impacting anyone with a mobile phone (iPhone and Android) using the Microsoft Outlook mobile app.  If the users switches to the native gmail or apple mail client they do not get a certificate error.  This is not impacting our Microsoft Outlook clients on PC.

    I guess its time to send an email out to 2000 users and ask them to switch from Microsoft Outlook to the native iPhone email client.

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  5. Anonymous
    2018-04-25T19:03:28+00:00

    Yes this is happening to all of our sales team as  well. We are using and Exchange server hosted onsite.

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    2 people found this answer helpful.
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