Outgoing email problem on Cpanel 92

[ebizindia]

We are having an odd problem with sending mail through Windows 7 computers on CPANEL 92 server.

Background
We bought a new server with CPANEL 92 on Centos 7.x. We migrated a few domains from the old 86 server running on Centos 6.x. After the update, some people are able to send emails but most others are not.

Current scene
After a few chats with data centre personnel and several hours of debates with the clients, We have come to a conclusion that people with windows 7 are having a problem sending emails though people with Windows 10 can.

We tried to use port 587 (the earlier setting) as well as port 465 with SSL/TLS but the connection just does not happen. Incoming mails are working.

Are you aware of any such problem and the corresponding solution?

 

[cPRex]

Hey there! Older versions of Windows not being able to send mail is a known issue. You can find many more details on this in our support article here:

Outlook TLS error: None of the authentication methods supported by this client are supported by your server.

Symptoms In Version 68 of cPanel, we introduced new SSL ciphers to increase the security of the mail server; this enables TLS 1.2 and disables older SSL protocols, such as TLS 1.0. You can read m...

support.cpanel.net

so I'd encourage you to read through that option as there are a few different solutions presented. Let me know if you have questions!

 

[ebizindia]

Thank you. This looks like a good solution for accommodating the older clients.

 

[cPRex]

It works well - let us know if you run into any issues with that!