Configuration under Iphone:
- Go to Settings> Accounts & Passwords, then tap Add Account. If you're using iOS 10.3.3 or earlier, go to Settings> Mail> Accounts and tap Add Account.

- Choose the Other option
- Enter your email address and password, as follows:
Username: email address
Password: Use the password for the email account.
Incoming server: mail.domain-name
IMAP port: 143
POP3 port: 110
Outgoing server: mail.domain-name
SMTP port: 465 with SSL (while choosing the SSL option Accept all certificates)
Authentication is required for IMAP, POP3, and SMTP.
For the configuration under Android, you must enter the same connection information:


