postfix how to assign virtual account to external user on amazon cloud service

Question

I installed postfix on my ec2 instance, but how external users can use their own account?

I added user1@mywebsite.com ubuntu into /etc/postfix/virtual

Of course I need to change user "ubuntu" but how? Do I need to go into IAM and create from there?

Answer 1

with postfix you installed an MTA (Mail Transport Agent), but to deliver mails to authenticated users you may need an MDA (Mail Delivery Agent) like Dovecot or something.

i think the Dovecot Virtual-Flat-File-Tutorial is a good point to start. http://wiki2.dovecot.org/HowTo/VirtualUserFlatFilesPostfix

when you looking for a complete step-by-step tutorial for postfix and dovecot try this: https://workaround.org/ispmail/wheezy