Webmail:
POP3 / SMTP Settings
General settings for hosted domains:
Log into your control panel account, then under Manage Accounts, you should see
the FQDN of your server. Use that hostname for both POP3(S) and SMTP(S) email retrieval or relaying.
Also make sure to turn TLS or SSL on.
Examples:
SMTP host: host50.etonic.net
SMTPS port: 587
SSL or TLS: ON
POP3 host: host50.etonic.net
POP3S port: 995
IMAPS port: 993
SSL or TLS: ON