Jika mendapati error email dengan pesan :
Result: Rejected relay attempt: '..........' From: '' To: 'mail@domain.com'
Solusinya dengan mengubah setting email routing pada cpanel pilih " Local Mail Exchanger "
Referensi : https://support.cpanel.net/hc/en-us/articles/360059252973-New-or-transferred-account-unable-to-receive-mail-Rejected-relay-attempt-550-Please-turn-on-SMTP-Authentication-HOST-is-not-permitted-to-relay-through-this-server-without-authentication
