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: <firstname.lastname@example.org> > 250 2.1.0 Ok > rcpt to: <email@example.com> > 554 5.7.1 <firstname.lastname@example.org>: 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.