Outlook 2010: The server you are connected to is using a security certificate that cannot be verified
|Email Client:||Microsoft Outlook 2010|
|Error Message:||The server you are connected to is using a security certificate that cannot be verified. The target principal name is incorrect.
|Solution:||This error is caused by a mismatch in enabling SSL and your port number in your account settings. Open Account Settings in Outlook and click on the advanced tab. If you need further assistance to open your account settings please see our Outlook 2010 Accessing Account Settings guide.
Verify that you are using the correct ports for the incoming and outgoing mail server. If you are going to use the SSL enabled settings you will need to use the correct servers. If you are on a shared hosting plan, you would use:
secure##.inmotionhosting.com (you will need to replace the ## with the server number in your Temp URL)
We recommend using the SSL enable options. If by chance you are in a school or somewhere that may have these ports blocked, you can use the non-ssl settings. The correct ports are below:
Important! To get your SSL settings please see our article on Getting Started Guide: Email.
Non-SSL incoming POP: 110
Non-SSL incoming IMAP: 143
Non-SSL outgoing SMTP: 587
SSL enabled incoming POP: 995
SSL enabled incoming IMAP: 993
SSL enabled outgoing SMTP: 465
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2014-05-01 7:45 am
The port details are correct, but still the same error is seen. "The server you are connected to is using a security certificate that cannot be verified. The target principal name is incorrect”.
Secondly when I clicked “view certificate”à it shows issued to gmail.com and the same settings are done in incoming and outgoing account settings. Also the certificate status says” The certificate is OK.”.
I tried all trouble shooting including system restore…but nogo. Your help in this regard is highly appreciated.
2014-05-01 7:58 am
If you're using a hostname which is not covered by the SSL certificate, this warning will appear. Could you clarify the hostname that you are using within your incoming/outgoing mail server settings?
2014-05-01 8:21 am
Good to see your quick response. Here are the details requested.
E-mail Client: MS outlook 2007
OS: Win XP SP3
Incoming mail server: imap.gmail.com
Port: 993, SSL type
Outgoing mail server:smtp.gmail.com
Port: 587, TLS type
Secondly when I try the test account settings button, it says its successful and I receive a test mail too.
2014-05-01 9:23 am
Unfortunately, I don't have exact details on why you may be getting this error in Gmail, but you may attempt to permanently save the exception. The Gmail forums may have more information for you as well.
2014-08-08 1:37 pm
From "Outgoing Server" Uncheck My outgoing Server(SMTP) Requires Authentication.
it worked for me :)
2014-09-10 6:21 am
I've been searching the web for an answer to this very problem, but with my local provider and using Outlook 2013 - POP/SMTP. The above replay gave me the hint:
There was nothing wrong with the names, but I found out that in the advanced settings of the account for " Use the following type of encrypted connection" I had set "Auto". When set to "none" the problem disappeared!