Email clients setting

Outgoing mail server SMTP

Server address: mailer.osu.cz
Port: 465
Security: SSL/TLS
Authentication: Password, secure connection
Login/username: Your login to OU systems

Incoming mail server IMAP

Server Address: oldstudent.osu.cz
Port: 993
Security: SSL/TLS
Authentication: Password, secure connection
Login/username: Your login to OU systems

For the authentication use your account and password for OU systems.