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?
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?