Can't send email from Droplet to same domain using Sendmail.
I’ve set up two LAMP Droplets with sendmail. One server is sending to the same domain that’s pointing to itself with no problem, however the other one will not send to the same domain as itself.
It’s giving an error of:
050 503-All RCPT commands were rejected with this error: 050 503-unknown user
I’ve set both droplets up in accordance to this guide using the droplet’s respective domains.
Is there something I’ve missed or is there an alternative?
mod edit: fixed the link