An encrypted connection to your mail server is not available

[jarecki74]

Hi

i have install new server

email autodicover is enabled

but on Outlook i have this info

An encrypred connection to your mail server is not available
Click next to attempt using unencrypted connection

in WHM Exim Basic configuration -> security i have all default enabled


Allow weak SSL/TLS ciphers [?] OF

Require clients to connect with SSL or issue the STARTTLS command before they are allowed to authenticate with the server. [?] ON

Options for OpenSSL [?] default

SSL/TLS Cipher Suite List default

 

[cPanelMichael]

Hello,

It's possible this is related to one of the issues discussed on the following thread:

Outlook 2016 Sending Email Fails After Cipher Suite Update

Let us know if that helps.

Thank you.

 

[Jaro747]

Hi, it is my post , i loget from other account , yout password reminder page have error

i have replace

For "SSL/TLS Cipher Suite List":

Code:
ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:-LOW:-SSLv2:-EXP


For "Options for OpenSSL":

Code:
+no_sslv2


but not working


i check on w7 outlook 2016 and wxp outlook 2010


in exim log i have

2018-01-23 19:57:30 TLS error on connection from [178.183.180.70]:49299 (SSL_accept): error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol



any sugestions please

 

[cPanelMichael]

i check on w7 outlook 2016 and wxp outlook 2010

For Windows 7, see this post:

Outlook 2016 Sending Email Fails After Cipher Suite Update

For Windows XP, see this post:

Outlook 2016 Sending Email Fails After Cipher Suite Update

Thank you.

 

[Jaro747]

it is not solution if i migrate 100+ accounts from other host with working imap on ssl

some updates in cpanel ?

 

[cPanelMichael]

Hello,

Ideally, you'd want to reach out to those users to have them use modern email clients with support for more secure authentication methods. However, as a temporary measure until that can happen, try using the steps listed on the following post:

New Thread - TSR-2018-0001 prevents Apple Mail from sending

Thank you.

 

[MojoCreations]

I am having the same issue. I have Outlook 2016, so it is a newer client. On 5 of our machines in the office, none can connect to the email server. We have Windows 7 with Office 2016.

I have run the easy fix / registry update recommended but that still does not work. If I connect to the server from Windows 10, the connection is successful. Why can't the Windows 7 with the same Office Suite not connect?

 

[cPanelMichael]

I have run the easy fix / registry update recommended but that still does not work. If I connect to the server from Windows 10, the connection is successful. Why can't the Windows 7 with the same Office Suite not connect?

Hello,

This is more of an issue that Microsoft's support would need to help you with if the workaround on the following URL doesn't help, as it's a limitation of their OS:

https://support.microsoft.com/en-us...-and-tls-1-2-as-a-default-secure-protocols-in

You could try contacting their support team directly to see if they can offer any additional help. In the meantime, you could try the workaround referenced on the following post to allow weak ciphers (these were the ones utilized in cPanel version 66):

Outlook 2016 Sending Email Fails After Cipher Suite Update

Thank you.