Relay Access Denied. Please help, I'm really stuck

1

I have two DigitalOcean droplets. DEV and MAIL, which is running MIAB.

When I attempt to send mail from DEV through MAIL, I get a “relay access denied error.”

> # telnet box.domain.com 25
> Trying xx.xx.xx.xx.xx...
> Connected to box.domain.com
> Escape character is '^]'.
> 220 box.domain.com ESMTP Hi, I'm a Mail-in-a-Box (Ubuntu/Postfix; see https://mailinabox.email/)
> helo dev.domain.com
> 250 box.domain.com
> mail from: <me@domain.com>
> 250 2.1.0 Ok
> rcpt to: <someuser@yahoo.com>
> 554 5.7.1 <someuser@yahoo.com>: Relay access denied

How can I send mail directly from one server through the MIAB server?

Please help, I have no idea how to move forward.

2

Try using Mailgun or Sendgrid for SMTP relay/ Website transactional mails, instead (a FREE 10000 emails/mo or 100 mails/day account are normally enough to cover this kind of needs for all of your WEB server domains).

3

I’m here looking for help, not an advertisement. Shame on you.

4

My friend!.. SMTP relay doesn’t work through MiaB (I don’t know why :/)… My answer is not an advertisement… It’s just the single way you could try to achieve what you asked for.

5

@pbarney Cool it, please. @just4t is trying to help. Mail-in-a-Box is not normally meant to be a SMTP relay and this forum isn’t for asking for basic system administration help.

To use Mail-in-a-Box as an SMTP relay, you’ll need to configure your server to connect in the same way a mail app would — the documentation for that is in your box’s Mail-in-a-Box control panel. We also have some notes at https://mailinabox.email/advanced-configuration.html.

6

Thanks! @JoshData . No doubt provided info. may help me, too in future system builds.