Question

My goal is to create a canned email on my server and then send the email from client email addresses. To do this and not be marked as spam I understand it must come from a domain matching the from address.
There are many user email addresses I would need to send email from, all with the same domain. With cooperation from my client, could I set this up to work with one SMTP credential or would I need credentials for each and every individual user?

To clarify, if I get an SMTP server address with a un/pw from my client, would that be enough to send from:

[e-mail]
[e-mail]
[e-mail]

Thanks!

Answer 1

Problem

You want to avoid joe-jobbing in your automated messages.

Your Options

It depends on how you’re submitting jobs to the MTA.

1. If you’re authenticating to a remote SMTP server for each message, then you need credentials for each user.
2. If you’re injecting messages directly into an MTA (e.g. with the sendmail command) that is authorized to send mail for the domain, then you only need privileged access.